Lexus RX 350

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Remote Engine Starter +

PT39848151 Product Image
Part Number: PT39848151
Supersession(s): PT398-48151

Your smartphone just got smarter and your life made a whole lot easier with the RES+.1, 2, 3 (Remote Engine Starter+).  Featuring an unlimited range4 and supporting up to four phones5 per vehicle, RES+ allows you the convenience of remotely controlling a number of your vehicle’s settings from the palm of your hand simply by using your smartphone.  With RES+, you can start the engine, which activates the pre-set or factory default air conditioner, heater and defroster settings, as well as the vehicle’s heated and ventilated front seats (if so equipped) so your vehicle will be ready and waiting with a more comfortable cabin and seat temperature.  Likewise, you can remotely shut the engine off as long as the engine was initially turned on using RES+.  Furthermore, as an alternative, you can remotely start and stop your engine by using your Lexus SmartAccess fob.6  This system also enables you to remotely lock or unlock2 your vehicle doors and a message will be displayed across the door lock/unlock screen confirming that your doors have been successfully locked or unlocked.  RES+ also allows you to locate your vehicle7, 8 in a crowded open parking lot, get the outside temperature near your vehicle, check your engine start/stop2 and door lock/unlock status2and even receive an email when your factory-installed theft-deterrent system is activated.  Purchase and installation of the RES+ accessory in your vehicle is required.  Yearly subscription fee, smartphone app download and registration are also required.  For more information, visit and click on the RES+ icon, or contact your Lexus dealer. Includes 1 Year Complimentary Subscription.


Fits RX 350 (2010 - 2015)

1. Purchase and installation of the RES+ accessory/hardware in the vehicle is required. To activate and use RES+ smartphone connected services requires online registration, an annual subscription fee of $65 and the smartphone app download.  Includes 1 Year Complimentary Subscription. 

2. For detailed functional restrictions and limitations go to and click on the RES+ icon. Next, click on “Manual.” Finally, under the heading “FOR SMARTPHONE OPERATION,” click on “OPERATION PRIORITY OVERVIEW (PDF)” and “OPERATING CONDITIONS (PDF).”  Use only if aware of circumstances surrounding the vehicle at time of start.  Operate only when legal & safe to do so (e.g. car uncovered in open area, no people or pets inside or nearby). See usage precautions & owner’s manual. 

3. RES+ comes with a warranty that is honored at all Lexus dealerships nationwide for up to 48 months/50,000 miles. See your Lexus dealer for specific warranty details. 

4. The smartphone and vehicle must be in a location with adequate cellular coverage for proper performance. 

5. Phones supported include select iPhone® and AndroidTM models. iPhone is a registered trademark of Apple Inc. Android is a trademark of Google Inc. Phones not included. To check current Lexus vehicle and smartphone compatibility with RES+ go to Click on the RES+ icon and then the “Compatibility” tab. 

6. The SmartAccess fob can remotely start/stop the engine with a range limitation of approximately 80 feet. 

7. CarFinder may not work in a covered or underground garage. 

8. Objects and structures surrounding your vehicle and/or smartphone, such as tall buildings and roof structures, can block GPS signals and affect location accuracy.


Ships Fast From Long Island City, NY
This product fits 30 vehicle variants.
Lexus: 2 models, 30 variants between 2010 and 2015.

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(5%) $28.30
MSRP and price exclude taxes, installation, shipping, and dealer charges. Dealer sets actual price. Contact dealer for limited warranty, inventory level, and return policy details.

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    Ed is the best. Nice and professional customer care.

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    Eddie was super helpful and responsive in nailing down part numbers.