John Deere Z545r ztrak mower 48 in

The operator station is designed to provide superior operator comfort for many different operators:

• Large, comfortable foot platform
• Plenty of legroom for comfortable operation
• Isolated with thick rubber spacers to minimize vibration
• Standard rubber floor mat for extra foot comfort
• Standard rubber toe board mat to stretch your legs in comfort
• Standard foot pegs allow various comfortable positions for your feet
• Adjustable seat position, armrests, and spring suspension to suit each operator
• Control panel conveniently located to the right of the seat
• Adjustable motion-control levers
• Upper and lower positioning combined with forward and rearward tilt offers more legroom and hand positions

Comfortable seat

The comfortable seat has two suspension springs, fore-aft seat adjustment and ComfortGlide suspension:

• A high-back, 22.5-in. (57.1-cm) seat with thick foam padding for good support and comfort
• Armrests for extra support
• 3-in. (7.6-cm) no-tools, fore-aft adjustment

Seat suspension

• Two long, steel springs to absorb shocks when traveling over rougher areas
• ComfortGlide is an additional system that allows a controlled fore and aft movement of the seat when experiencing undulations in uneven terrain. (M and R Series only)
• Dramatically reduces horizontal vibrations and reduces jarring
• Feel of ride is as if the operator is floating over the ground
• Makes a big improvement to operator ride comfort
• Allows front to rear movement, 1-in. (2.5-cm) forward and 1-in. (2.5-cm) rearward, to be absorbed
• One lever with three positions
• Slide seat fore/aft up to 3 in. (7.6 cm)
• Engage isolator function to allow movement up to 1 in. (2.5 cm) fore and aft
• Disengage isolator function to lock seat in position

Foot pegs (standard on R Series, optional on E and M Series)

Foot pegs (standard on the Z530R and Z545R and available as an extra-cost kit on the Z515E and Z530M) provide you with different foot placement options.

Foot pegs are secured to the toe board in the horizontal position to provide more variability for foot placement. The pegs also act as handles to remove and replace the foot platform.

NOTE: Toe-board mat shown in photo is standard equipment on the Z530R and Z545R and can be ordered through Parts for the Z515E and Z530M.

Cup holder and storage compartment

The dual beverage holder on the left fender and storage compartment on the right fender add convenience for the operator:

• Room for two drink containers of various sizes for longer mowing jobs
• Storage compartment provides a safe and convenient location to store tools and supplies

NOTE: A storage compartment cover is standard on the Z530R and Z545R.

12-V charge port

12-V outlet is located within the storage compartment for the convenience of connecting a variety of electrical and electronic equipment.

Control console includes an easy-to-read fuel gauge

The control console is located to the right of the operator station and includes the following:

• Ignition switch
• Power take-off (PTO) control (yellow)
• Light switch
• Space for an additional electric control switch
• Engine speed controls (orange)     

The Z545R engine is equipped with electronic fuel injection (EFI) and electronic throttle control (ETC) that permit simplified electronic control of engine speed and power for optimum performance in varying conditions:

• MAX – full power and performance for the toughest mowing conditions, such as longer, thicker grass
• ECO – fuel saving setting for easier mowing conditions, such as shorter or dryer grass
• MIN – engine idle speed for transport, loading/unloading, etc.

Advanced instrument display has the look and feel of a modern automobile with a power-up sequence cycles lights and gauges to indicate they are working:

• Display features a dark cockpit design to minimize operator distractions.
• Display is backlit for night visibility.
• Hour meter makes it easy to tell when oil changes and other maintenance should be performed.
• Electronic fuel gauge provides real-time fuel level information.
• A tachometer graphically displays engine speed.
  • Target-zone graphics inform the operator of the engine speed range to use for best cut quality.
• An indicator tells the operator when the PTO is operating.
• Bright caution and stop lights capture the operator's attention when important information is on the instrument cluster.
  • Damage can be prevented and repair costs can be reduced by addressing problems early.
• Operators are advised of what the problem is if they attempt to operate the mower with unsatisfied PTO, seat, or park brake interlocks.
  • The indicators are also useful to identify the reasons the PTO or engine may have shut off when an interlock is unsatisfied.
• Operators are advised if battery voltage is low, normal, or excessive.
• The service indicator light illuminates to indicate a diagnostic error code is stored.
  • On-board diagnostics provides trouble codes for use by trained technicians.
    • For example, a technician can test switch functionality and circuit continuity without tools.

Fuel sight widow and fill cap

A conveniently located fuel-sight window allows the operator to view the fuel level when approaching the vehicle from the front:

• Semi-clear material makes seeing how much fuel is in the tank quick and easy.
• Large, 3-in. (7.6-cm) diameter fuel-fill opening reduces the chance of spilling when adding fuel.
  • Fuel-fill opening is low and angled to make adding fuel easy.
• Cap is tethered to the fuel tank.
  • Less chance of fuel cap getting lost

Mower deck lift and cut height

Mower deck cutting height can be adjusted from 1 in. (2.5 cm) to 4 in. (10.2 cm) in 0.25-in. (0.64-cm) increments for excellent cut quality and performance:

• A convenient foot-lift pedal is used to raise the mower deck for setting cut height or locking mower in the raised or transport position.
• A lift-assist spring is provided to optimize the effort it takes to raise the mower deck.

Tracking adjustment

Tracking adjustment can be made from the operator seat with the provided tool.

Cut-height adjustment and transport lock

• To adjust cut height, simply push down on the foot-lift pedal, place the cut-height pin in the desired location, and release the foot-lift pedal to lower the deck to the chosen height.
• Use the foot-lift pedal to lock the deck in transport mode. Simply depress the pedal all the way and the deck will lock into transport mode.
• To unlock and lower the deck, push down on the foot-lift pedal, pull up on the transport unlock lever, and release the foot-lift pedal to lower the deck to the chosen height.

Adjustable steering levers

Motion control levers are shaped and located for operator comfort and ease of control.

The motion-control levers can be adjusted to two different height settings and nine different fore-aft settings:

• Combined height and fore/aft adjustments provide 18 positions
• Increased operator comfort with more leg room and more hand positions
• Adjustable for most precise control of the machine

Park brake

The park brake is conveniently located:

• Large lever is easy to use.
• Park brake effectively holds the machine in the parked position.
• Park brake must be engaged (in the upper position) to start the engine. 
• Once the engine is started, the park brake must be disengaged before operating the motion-control levers.

Brake-and-go logic:

• Park brake must be engaged for the engine to crank.
• Motion-control levers must be in the outward position for the engine to crank.
• Park brake must be disengaged before operating the motion-control levers or the engine will stall.

Safety interlock system

Safety interlocks help prevent operating in an unsafe way:

• The parking brake must be engaged for the engine to crank.
  • Parking brake is set when motion-control levers are in the outward position.
• The operator presence system requires the operator to be in the seat to operate the PTO.
• The key switch interlock prevents bypass starting.
• If the operator leaves the seat when the PTO is engaged, the controls are in the operating position, or the parking brake is not set, the engine will shut down.
• The seat interlock switch disengages the mower when the operator leaves the seat.
• The engine will stall if the operator leaves the seat without the motion-control levers in the outward position and the parking brake set.

High Capacity Mower Decks are a heavy-duty, 9-gauge, 0.15-in. (3.8-mm), forged-steel, deep, flat-top design that delivers excellent cut quality, productivity, cleanliness, durability, and versatility. Experience optimal performance and dispersion of clippings, even at faster mowing speeds:

• Deep-deck design throughout the entire deck shell provides optimum mowing, mulching, and bagging performance.
  • Optional MulchControl™ attachment provides superior mulching performance and versatility (not available on 48HC decks).
• Forged-steel design eliminates sharp edges and corners where material can build up and diminish mowing performance.
• Mower deck is suspended from the vehicle for a smooth and level cut.
  • Adjustable mower wheels positioned just above ground level help smooth out the mowing job.

Z530R and Z545R ZTrak™ Mowers are equipped with a 48-in. (122-cm), 54-in. (137-cm), or 60-in. (152-cm) High Capacity Mower Deck.

Compatibility

Deep deck design

The mower deck has a deep-deck design:

• Constructed from heavy, 9-gauge, 0.15-in. (3.8-mm) steel
  • Minimizes the number of welds required
  • Has a smooth underside for reduced material buildup
• Deep-deck design delivers excellent airflow so large volumes of material can be processed quickly and efficiently.
• A wider and higher discharge opening provides even clipping dispersal for an excellent finished appearance in all conditions.
• A durable, plastic deflector spreads grass clippings evenly across the lawn, is hinged, and can be raised to minimize the storage space required.
• 1-in. (25.4-mm) cold-forged spindles are heat-treated for strength and are supported by ball bearings.
• Standard front rollers and two double-captured wheels provide a more even mowing job and reduce the chance of scalping.
  • Adjustable for different mowing heights
• The front edge is raised above the blade plane to allow for even cutting of tall grass.
• Blade overlap is greater than many conventional decks for a clean cut.
• The mower can side-discharge, mulch, or collect material.

Mower level adjustment

• Deck leveling and rake angle adjustment is provided at all four mower mounting points.

Reinforced leading edge

Steel reinforcing bars are welded to the front edge and trim side of the mower deck:

• Strengthens the deck to reduce chance of damage from obstructions
• Increased material thickness for longer deck life

Superior durability is designed in

The deck has deep, strong spindle pockets to keep the blades aligned, even after years of tough operation:

• Ribs formed in the deck shell add strength where needed.
• The aluminum spindle housing has an 8-in. (20-cm) base for extra strength.

Flip-up spindle covers make cleaning the spindle area convenient.

Wheels and rollers

Dual-captured side anti-scalp wheels and front rollers:

• Give a more even mowing job and reduce the chance of scalping
• Wheels are adjustable for different mowing heights

MulchControl limitations

While in the side-discharge mode, MulchControl will still mulch about one-third of the material. Therefore, the side-discharge mode is essentially a partial mulch mode. This can be an advantage when side discharging or bagging, as it helps reduce the amount of material being discharged. Other times this could work as a disadvantage:

• When cutting strong southern grasses, such as Zoysia and Bermuda
• When cutting in wet, high-growth conditions, such as those found in the Pacific Northwest United States
• When optimum bagging and lawn cleanup is desired

Optional MulchControl™ attachment

The MulchControl attachment makes mulching more practical for many mowing situations because it not only does an excellent job of mulching but it also allows the mower to be easily converted for times when it is more desirable to side discharge or collect the lawn material. Advantages of mulching grass clippings include:

• A beautiful looking lawn
• Grass clippings not blown onto the operator, driveways, or flower beds
• Less fertilizer required
• Elimination of the effort needed to dispose of clippings

MulchControl is an innovative, simple design that is easy to use and maintain:

• The MulchControl attachment includes baffles to control the flow of material under the deck.
• Mulching blades to give a more complete mulching job are included.
• The left mower blade area is completely enclosed and optimized for mulching and will mulch even when the mower is in the side-discharge mode.
• Baffles around the center and right blades are optimized for mulching when the discharge baffle is closed.
• A MulchControl kit is not available for 48HC mower decks.

MulchControl operation

The optional MulchControl attachment comes with a handle on top of the mower deck that is used to open and close the discharge baffle:

• The operator is required to get off of the machine in order to engage or disengage mulch mode.
• Changing from mulching to side discharge or vice versa with the hand lever takes only a few seconds.

MulchControl is well-suited to the following mowing situations:

• Usually mulch, but side discharge when grass gets too long
• Usually side discharge, but would like to be able to close the chute to control clippings
• Always mulch a main lawn, but often side discharge secondary lawns
• Bag clippings, but want to go farther before emptying bags

MulchControl puts the operator in control of the clippings. The operator can have all the benefits of mulching with the ability to easily change to side-discharge or bagging when needed.

Specifications

NOTE: MulchControl attachments and MCS components are not included in base equipment for a Z500 Series machine and must be ordered separately.

Optional 6.5-bu (229-L) ZTrak Z500 Series material collection system (MCS) (not available for 60-in. [152-cm] High Capacity Mower Deck)

The 6.5-bu (230-L) rear bagger efficiently collects material from a 48- or 54-in. (122- or 137-cm) Mower Deck:

• Hopper and included attachment bar/bumper, Power Flow blower, and chute components are ordered separately to make a complete MCS.
• A weight bracket is included for installation on the front of the vehicle to help counterbalance the weight of the hopper. For proper ballast with complete MCS:
  • Four weights are required on a ZTrak Z500 Series equipped with a 48-in. (122-cm) Mower Deck.
  • Three weights are required on a ZTrak Z500 Series equipped with a 54-in. (137-cm) Mower Deck.

The hopper design provides efficient bagging performance, clean operation, and easy-to-empty bags:

• Two durable bags give a generous, 6.5-bu (230-L) capacity.
• The bags lift out for easy emptying.
• An efficient chute provides a smooth flow of material to reduce the chance of plugging.
  • The chute and Power Flow blower must be ordered separately.
• Standard mower blades are used for bagging.
• The air exhaust duct directs air from the hopper back and toward the ground for clean operation.
• Convenient latch makes opening and closing the hopper easy.

NOTE: Appropriate hopper with included attachment bar, Power Flow blower, chute and weights are required and ordered separately.

• The Z545R engine includes EFI and ETC features for superior performance:
  • EFI meters the correct amount of fuel directly into each engine cylinder for all operating conditions.
    • Simplifies engine starts and warm-up by eliminating the need for the operator to use a choke.
      • Fast, reliable starts are routine just like with a modern automobile.
    • Fuel usage is reduced up to 20 percent compared to a carbureted engine.
    • No adjustments are needed at altitude
    • No choke-related problems since the choke is eliminated
    • Reduced maintenance expense because of fewer complaints related to hard starting, vapor lock, misfire, run-on, or fouled spark plugs
  • ETC works in conjunction with EFI to electronically adjust the supply of fuel air mixture.
    • Increases torque as needed to maintain engine operating speed under load.
    • Ground speed and mower blade-tip speed remain constant, even in heavy-grass conditions, to improve productivity and cut quality.
    • Mechanical governors cannot respond fast enough to maintain a constant engine speed.
    • Some torque rise remains to warn the operator before the engine stalls.
• Large 44.2-cu in. (724-cc) displacement for torque to pull through tough operating conditions.
  • Easy inspection and removal of any debris that may have collected using two large cleanout ports that are integrated into the engine shroud over the cylinder heads.
  • Engine service times, reliability, and life are increased with the use of premium engine oil and air filtering systems, as well as the cooling design.
• 25 hp (18.6 kW) at 3500 rpm for excellent performance
  • Greater torque, lower vibration, and improved sound quality from the V-twin cylinder design
  • Fast starts with electronic ignition
  • Long engine life with cast-iron cylinder liners
  • Excellent power and fuel economy with overhead valves
  • Reliable operation with in-line fuel filter

No choke control is needed:

• A servo motor controls the intake air butterfly valve and the air stream.
• For cold starts, the actuator will close the valve, making starting the engine easier. No choke lever is needed.
• Starts are quick and easy, even for inexperienced operators.

Since the Z545R engine is equipped with EFI and ETC, simplified electronic control of engine speed and power for optimum performance in varying conditions is advantageous:

• MAX – full power and performance for the toughest mowing conditions, such as longer, thicker grass
• ECO – fuel saving setting for easier mowing conditions, such as shorter or dryer grass
• MIN – engine idle speed for transport

Easily access the oil check and fill cap that is located at the top of engine. A no-tools oil-drain cap with hose is also provided for easy, no-mess maintenance.

4.5-gal. (17-L) fuel capacity for extended mowing times

The 4.5-gal. (17-L) fuel tank is easy to fill and has a sight level window and dash-mounted gauge:

• Longer times between refills with the large tank
• Easy to see how much fuel is in the tank by viewing the sight gauge when approaching from the front of the machine or glancing at the dash from the seat
• Easy filling and minimum chance of spills with a large, 3-in. (7.6-cm) diameter fuel opening that is low and angled

John Deere recommends the use of fuel stabilizer in gasoline. See Fuel-Protect for gasoline engines (8 oz [237 mL]) for more information.

The spacious operator station has been designed for comfort, visibility, and ease of use:

• Getting on and off easy with the flat operator platform.
• Convenient-to-use controls are located close to the operator.
• Operator controls are color coded and designed for easy identification and operation.

The ROPS and seat belt work in conjunction to provide a protective zone around the operator:

• It reduces the operator’s risk of being crushed under the vehicle should it overturn.
• In most situations, the ROPS limits the overturn to little more than 90 degrees.
• When used with a seatbelt, the ROPS is very effective in preventing deaths and serious injuries.
  • Use of the seat belt is recommended when operating with ROPS in the upright position.

Foldable ROPS and retractable seat belt are standard equipment:

• Handles on the position pins provide a good grip and make changing the angle of the ROPS easier.
• The door height of most garages will accommodate the machine with ROPS in the fully raised position.
  • Easy-fold ROPS improves the ability to store the ZTrak™ mower in structures with a lower door opening.

Extra, top-of-the-line appearance features make the Z530R and Z545R look as good as they are

Green seat accents and the John Deere logo visually communicate a premium offering and give a distinctive appearance.

Green fender trim adds style and keeps the machine cleaner by blocking some of the material thrown by the tire.

Rear wheel rims have an automotive look for overall enhanced machine appearance.

Left and right tunnel supports enhance the appearance of the Z530R and Z545R and work in conjunction with the rubber-isolated floor platform to provide extra support and rattle-free operation.

Front and side lights

The attractive design includes a provision for light-emitting diode (LED) lighting:

• Two front lights face forward for front visibility.
• Side lights are positioned to provide excellent visibility of the mower deck. 

NOTE: Lights are standard on the Z530R and Z545R and optional on the Z515E and Z530M.

Formed and welded steel frame

A strong, welded steel frame provides solid, reliable support for the machine components and operator:

• Heavy-duty 1.5- x 2-in. (38- x 51-mm) frame tubing for durability
• Rear frame provides solid support and protection for the engine

Rear hitch

Strong frame is designed to accommodate a rear hitch that can be used to pull a variety of lawn equipment:

• Can support up to 100 lb (45.4 kg) of tongue weight
• Can pull equipment weighing up to 250 lb (113.4 kg)

NOTE: The rear hitch is standard on the Z530R and Z545R and optional on the Z515E and Z530M.

Large, smooth-riding front caster wheels

Large front caster wheels provide a smooth ride and level cut:

• Large, 13x5.0-6 tires travel over bumps more smoothly
• Pneumatic tires for the smoothest ride 
• Better performance on slopes

Caster wheels turn easily on two maintenance-free sealed ball bearings for both the spindles and the wheel axles:

• Long, trouble-free life
• Designed to give smooth turns without damage to the turf
• Large rear drive wheels for a smooth ride and level cut

Large rear tires

Rear tires have high-quality tread and optimum size for superior traction and smooth ride:

• Tire size is 23x10.5-12.
• Tread pattern is optimized for excellent traction and minimum turf damage.
• Special wheel design gives an enhanced appearance to the machine.

Dual unitized transmissions efficiently power the ZTrak™ mower forward and reverse and provide steering capability:

• Experience excellent hillside stability with transmissions that are set low in the vehicle.
• Tuff Torq® TZT7-M transmissions are reliable and durable.
  • Beefed-up 1-in. (2.5-cm) axles for greater strength
• Maintenance-free, unitized transmissions are sealed and have no hose connections to leak hydraulic fluid.
• Four-bolt hubs provide a reliable and convenient wheel-mounting system.

Tow-valve controls are provided for each transmission and are located on the transmission near the expansion tanks:

• Easy to reach and use
• Allow the vehicle to be moved without the engine running

Adjustable steering levers

Motion control levers are shaped and located for operator comfort and ease of control.

The motion-control levers can be adjusted to two different height settings and nine different fore-aft settings:

• Combined height and fore/aft adjustments provide 18 positions
• Increased operator comfort with more leg room and more hand positions
• Adjustable for most precise control of the machine

Tuff Torq is a trademark of Kanzaki Kokyukoki Mfg. Co., Ltd.

John Deere riding lawn mowers are equipped with a QR code label that links to an owner support website. The label can be found on the rear fender, to the left of the seat.

The owner support website is formatted for smart phones and available without setting up an account and password. The QR code includes the mower’s serial number, enabling the owner support website to provide a maintenance schedule, service parts, attachments, how-to guide, videos, warranty information, and an operator’s manual for the specific mower.

The owner support website also allows users to purchase service parts, schedule dealer service, purchase extended warranties, and download the Equipment Mobile app. The Equipment Mobile app enables users to maintain a shared digital service record with their dealer.

Convenient service internal decal

A convenient service interval decal provides basic maintenance information:

• Provides a quick reference for keeping recommended service up to date
• Located under the seat for easy viewing

Engine service

The engine is easy to service and takes a minimal amount of time:

• Air filter is on top of the engine and the cover flips up for easy access.
• Cooling fin cleanout ports are located under the air cleaner cover.

• Engine oil fill/check tube is easy to see and reach.
• Oil drain tube is provided for easier, cleaner oil changes.

Mower service

The footrest area is removable without tools to easily access the mower deck for service:

• Easy to clean grass off the top of the mower
• Provides convenient access to the mower drive

Accel Deep™ Mower Decks have features that make them easy to service:

• Flat-top design minimizes places for debris to collect.
• Spring-loaded, flip-up belt guards make removing debris easy.
• Deck-leveling gauge and wrench are conveniently stored on the machine

Tracking adjustment

Tracking adjustment can be made from the operator seat with the provided tool.

A 4-year or 500-hour single-source, bumper-to-bumper warranty* is included for all John Deere Z530R and Z545R Z300 ZTrak™ Mowers.

• The warranty is hassle free, with both the mower and the engine covered by a single warranty.
• If the mower is sold, the remaining warranty term is transferable to a new owner.

*Term limited to years or hours used, whichever comes first, and varies by model. U.S. and Canada only. See the LIMITED WARRANTY FOR NEW JOHN DEERE TURF AND UTILITY EQUIPMENT at JohnDeere.com or JohnDeere.ca/TUWarranty for details.

Overview

Keep your John Deere equipment running its best with the John Deere Equipment Mobile App. Download the app from the mobile device’s app store, then add all your John Deere equipment by scanning the serial number bar codes. Once your equipment is added, you can access all your product’s model, serial number, and model year information in one place. The app also provides maintenance, parts, and support resources that are specific to your serial number(s).

Find the right parts the first time

It is important to get the right parts the first time. When you load your equipment list, Equipment Mobile provides parts information specific to your serial number(s). This is helpful to you and your John Deere dealer, as some parts can vary by serial number range.

Plan, track, and coordinate maintenance with your dealer

Equipment Mobile includes comprehensive maintenance plans for each piece of your equipment. The maintenance plan screen keeps track of completed tasks, provides a place for your notes, and provides parts listings. You can also share your maintenance plan with your dealership, enabling tasks completed by the dealer to be included.

Operator’s manual in the palm of your hands

A machine’s operator’s manual is a go-to resource that is available in Equipment Mobile. You can search, view, and download a copy. The operator’s manual is specific to the serial number(s) of your equipment.

Smart Connectors

A smart connector links the mower to the Equipment Mobile App and transmits vehicle information via Bluetooth® wireless technology to provide:

• Engine hours, that enable maintenance reminders
• Key switch status and battery level to warn if the battery is low
• Fuel level - even when away from the mower, the app remembers the fuel level so you can make sure the mower is fueled when it is time to mow

Optional BUC11960 smart connector is for use with:

• S120, S130, S160, S170, and S180 Tractors
• Model year 2021 and newer S240 Tractors (serial number 880,001-)
• Z515E, Z530M, Z530R, and Z545R ZTrak™ Mowers

Hours, fuel level, key switch status, and battery level are updated whenever the Equipment Mobile device is in range of a mower with a BUC11960 smart connector.

One end of the wiring harness plugs into the back of the fuel gauge. The other ends plug into the smart connector and the tractor's wiring harness. Z500 ZTrak Mowers come with a dedicated connectivity connector, so the new wire harness is not needed.

Optional BUC10537 smart connector is for use with:

• Model year 2016 and newer Select Series X300 and X500 Tractors

Hours, fuel level, key switch status, and battery level are updated whenever the mower’s key is turned on and the Equipment Mobile device is in range of a mower with a BUC10537 smart connector. The X350R Tractor does not report exact fuel level, it only indicates if the mower is low on fuel.

One end of the wiring harness plugs into the back of a Select Series X300 or X500 Tractor instrument cluster. The other ends plug into the smart connector and the tractor's wiring harness.

The Z370R and Z380R Electric ZTrak Mowers include the smart connector in base equipment.

On Electric ZTrak Mowers the battery level, charging status, and hours are transmitted when the Equipment Mobile device is in range of the mower, and the mower is on or actively charging. Equipment Mobile can also update an Electric ZTrak Mower’s controller software.

A smart connector requires the Equipment Mobile App. The John Deere Equipment Mobile App can be found in the mobile device’s app store.

Bluetooth is a trademark of Bluetooth SIG, Inc.