Why My Tesla Lane Keep Assist Not Working! [Solved]

Sometimes the lane assist option refuses to work like it used to do. Due to system error, wrong speed limit, software left to update, or dirt on cameras and sensors, this happens.

So, is there any way to solve the Tesla Lane keep assist not working? Yes, if you can follow the instructions properly, here are the solutions:

  • Soft & hard reset.
  • Driving at the right speed limit.
  • Update the available software.
  • Wash the cameras and sensors.

It is lacking in detail when you want the procedure. In this guide, I’ll explain the above solutions in different sections so you can understand. Let’s go!

Why My Tesla Lane Keep Assist Not Working & How to Fix

4 Reasons Why Tesla Lane Keep Assist Not Working!

The Tesla lane departure avoidance features being unavailable can occur due to four main causes. These include:

  • Internal system fault.
  • Driving above 40 – 90 MPH or not traveling within the speed limit.
  • The latest version of the software hasn’t been updated.
  • Dirt and obstacles on the cameras and sensors. 

How To Troubleshoot Tesla Lane Keep Assist?

If your Tesla Model 3 lane assist not working or other series (MS, MX, & MY), then do the following fixing methods that work:

Solution #1: Attempt Reset on Tesla

The Tesla can have internal errors in the system to function and show the right lane view when keeping assist. This happens a lot and the troubleshooting technique will take not more than 2 – 10 minutes with the soft and hard reset.

  • Hold the 2 scroll buttons of the steering wheel and do this until the screen goes off.
  • Wait for around 25 – 30 seconds (at max) for the screen to come out.
  • Test it out. If that doesn’t solve it, then do a hard reset.
  • Click on Controls > Safety > Power Off. 
  • Again, hit the “Power Off” option.
  • Get out of the car and open the front trunk.
  • Take out the top panel storage and reach the battery compartment.
  • Remove the high-voltage loop plug and then the ground wire (negative terminal) from the 12V battery.
  • Let it sit for 5 minutes and then insert the high-voltage loop plug.
  • Attach the ground wire to the 12V battery.
  • Reinsert the top panel storage and close the hood.
  • Wait for 3 minutes and then get inside the car.
  • Press the brake pedal to check if it solves or not.

Solution #2: Maintain the Right Speed Range

A lot of times folks forget to follow the basic rules that are required like the speed limit of lane assist. According to the Tesla owner’s manual, it needs to be within 40 to 90 MPH. So, be sure to maintain the speed range and run on the highway while using the lane assist.

FYI: The lane assist isn’t 100% accurate so it can sometimes show the wrong view when it’s raining, snowing, or too sunny weather. Don’t just rely on the lane assist!

Solution #3: Update the Available Software

It’s possible that the available software in the Tesla system and app needs update which causing this sort of bug. If that happens, you should check on these to do the update and fix the issues.

  • On your phone, open the Tesla app.
  • Click on the “Software Update” option at the top section.
  • Hit on the “Install” option to confirm the update procedure.
  • Wait for the remaining time that the screen show (around 2 to 4 hours). It’s best to do it when you are not using the car and leave it overnight to reboot itself.
  • Reach the touchscreen and hit on Controls > Software.
  • Locate the “Update Available” section to see how much software needs an update.
  • Turn on the Wi-Fi or cellular connection.
  • Click on the download option and let it install properly.
  • See the lane view if it still shows the same sort of error or not.

Solution #4: Clean All Cameras & Sensors

The Tesla can show some issues related to lane assist when the cameras and sensors are not able to operate and detect the direction. And so, you see the lane keep assist not working. To solve that, here’s the direction:

  • Find all the cameras (3 in the rear-view mirror, 2 in the B pillar, 2 in the badge turn signal assembly, and 1 under the trunk lid). FYI, the MS, MX, and MY have 8 while the M3 offers 9 (including the cabin-facing camera at the top of the rear-view mirror).
  • Take a spray bottle. 
  • Spray some solution directly on all the lenses of each camera. You can also use a pressure washer to clean the lenses.
  • Locate all the sensors and clean them using the pressure washer. Wipe them with a dry rag. Done!

Note: Be sure you have turned on the feature (lane assist) in the control panel settings. And avoid putting torque on the steering wheel when trying the above solutions.

How Do You Activate Tesla Lane Assist?

To know the process in detail, let me show you the instructions to turn on the lane assist option in Tesla below:

How Do You Activate Tesla Lane Assist

Activate Lane Assist in Old Cars

  • Click on touchscreen to go to control panel. 
  • Press on “Settings” at the top.
  • Hit “Driver Assistance” (right below the HomeLink option).
  • Locate the Lane Assist section (Lane Departure Warning). There you’ll see 2 options which are “Off” and “On”.
  • Click on “On” to activate the lane assist.

Activate Lane Assist in The Latest Car

  • Maintain your driving at 64 and 145 km/h on road with a clear or visible lane marking.
  • Reach the touchscreen and click on the “Controls” (Car icon) to find the control panel.
  • Then, click on Autopilot > Lane Departure Avoidance.
  • There you’ll find these 3 options –
  • Off: This won’t show a warning if the wheel passes over the lane marking or perform potential collisions.
  • Warning: This will show a warning of lane departure or potential collisions in an adjacent lane. It’ll make a vibration in the steering wheel.
  • Assist: It keeps the car in a safe position by correcting the steering if you drive the car out of the lane marking or near the edge of the road.
  • Click on “Warning” or “Assist” to activate the lane assist based on your liking.

Ending Note

It’s terrible to discover the Tesla Lane keep assist not working when you are driving on a highway or road. In order to fix that, I suggest doing the above ways. 

It will take no more than 15 minutes to perform in real life and saves $300 – $400 from repair. Hope you find this handy to solve the error. 

I’ll Catch You in Next Guide, Tata!

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