How to Remote Start Your Lexus RX 350

Use your key fob or the Lexus mobile app to remote start your Lexus RX 350.
Written by Olivia Rose
Reviewed by Jessica Barrett
Updated on Feb 24, 2023
To remote start your Lexus RX 350, double-click the LOCK button on your key fob, then press and hold the LOCK button on your key fob for 3 seconds. Your hazard lights will flash and then your engine will start. 
You can also remote start your Lexus RX 350 with your mobile device
We've compiled this guide to walk you through remote starting your Lexus RX 350 and tips for staying safe while using Lexus’s remote start features.
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How to remote start your Lexus RX 350

Remote starting your Lexus RX 350 is pretty simple—and we have all the details for you. 

Starting the car

There are two ways to remote start your Lexus RX 350: using your key fob or by using your mobile device. For both methods, your RX 350 will run for 10 minutes and then automatically shut off if no activity is detected. 

Key fob

  1. Press the LOCK button on your car fob
    twice within 2 seconds. You can think of this as a “double-click” to make it easy. 
  2. Press and hold the LOCK button on your key fob for 3 seconds
After successfully completing these two steps, your turn hazards should flash and your engine will turn on!

Mobile device

The mobile device method is a bit more complicated at first because it requires downloading the Lexus app and getting your account and car set up in order to use Lexus’s Enform Remote service. But fear not—you’ll only need to complete steps 1-3 the first time you use your mobile device to remote start your Lexus RX 350. 
  1. Download the Lexus app from Google Play or the Apple store onto your mobile device. 
  2. In the Lexus app, verify your country and language, then click SIGN-IN or MAKE AN ACCOUNT
  3. Enter your RX 350 into the Lexus app and activate Enform Remote service for your car. 
  4. Press and hold the START ENGINE button on the home screen of your Lexus app. 
That’s it! Your hazard lights should flash and your Lexus RX 350 engine will start.

Turning off the engine

Turning off the engine of your Lexus RX 350 remotely is just as simple as starting up—and there are also two ways to do it: with your key fob or with your mobile device. 

Key fob

Press and hold the LOCK button on your key fob for 2+ seconds to remotely shut off your Lexus RX 350 engine. Unlike the next method we will go over, this method keeps your car doors locked—so we generally recommend it as the most secure method. 
Alternatively, you can press the UNLOCK button on your key fob. This will both turn off the engine and unlock your car doors. If no activity is detected, your doors will relock shortly after. 

Mobile device

In your Lexus app, press and hold the STOP button
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Lexus RX 350 remote start tips and tricks

Hold on! Before you get carried away remote starting your engine like there’s no tomorrow, take a look at our tips and tricks for remote starting your Lexus RX 350. 
  • First, might we suggest the two Vs of car safety: verify ventilation. You should only remote start your Lexus RX 350 if it is in a well-ventilated area—which usually means outside! If you remote start your Lexus RX 350 in, say, an enclosed garage, you run the risk of toxic carbon monoxide buildup, which can be deadly. 
  • Watch out for flammable material. It’s probably not likely that you parked your car next to a gas tank, but be wary of oil or grease or other flammable materials near your car—best to move your RX 350 to a safe spot before using your remote start. 
  • If you want your engine to stay on more than 10 minutes after you remote start, just repeat the remote start process!
Key Takeaway Make sure your Lexus RX 350 is in a well-ventilated area and far from any flammable materials before using the remote start feature. 

Which Lexus models come with remote start?

All Lexus cars manufactured in 2015 or later are compatible with Lexus Enform Remote, which allows you to use your mobile phone to remotely start your Lexus. Here are some of Lexus’s models that can come with remote start: 

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Al Lexus RX 350s manufactured after 2015 are remote start enabled.
The process to remote start your Lexus RX 350 takes about 2-5 seconds depending on whether you use the key fob or the mobile app on your smartphone.
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