automatic vehicle hold disabled tesla

How to Fix Tesla Automatic Vehicle Hold Disabled

One of the most common reasons for AVH to be disabled is a software bug. Software bugs can cause the AVH system to malfunction or prevent the system from activating altogether. If you’re experiencing problems with AVH, the first thing you should do is check if there’s a software update available. If there is, install it and see if that fixes the problem.

I remember the first time my Tesla’s Automatic Vehicle Hold (AVH) was unexpectedly disabled. At a red light, I took my foot off the brake pedal, expecting AVH to keep the car still. But instead, the car started to roll forward. I had to press the brake pedal again to avoid hitting the car in front of me. I was surprised and frustrated. I had been using AVH for months without any problems. Why was it suddenly disabled? I researched online and discovered that AVH can be disabled for various reasons, including software bugs, brake sensor issues, and hardware failures. In my case, it turned out to be a software bug. I updated my Tesla’s software to the latest version, and AVH started working again.

In this article, I will discuss the most common reasons AVH might be disabled on your Tesla and how to fix each problem.

Automatic Vehicle Hold Disabled Tesla (Causes and Fixes)

There are different reasons why your automatic vehicle hold is disabled on your Tesla. Some of the most common ones include:

  • Emergency braking
  • Brake system issue
  • Wheel speed sensor problems
  • Software issue
  • Shifting to Neutral

Now that you know some of the common reasons why your automatic vehicle hold is disabled, I’ll give you different ways to fix them.

Let’s begin!

1. Emergency braking

Solution 1: Install a software update.

Software bugs can sometimes cause AVH to be disabled, and they can also cause problems with the emergency braking system. If you’re experiencing problems with emergency braking, the first thing you should do is check if there’s a software update available. If there is, install it and see if that fixes the problem.

Solution 2: Restart your Tesla

A simple restart can sometimes fix minor software glitches. To restart your Tesla, go to Controls > Software > Restart.

Solution 3: Check your brake fluid level.

If your brake fluid level is low, the emergency braking system may not work properly. I’ve been a Tesla owner for a couple of years, and I’ve checked my brake fluid a few times. It’s a really simple process, but it’s important to do it regularly to make sure your brakes are working properly.

Here’s how to check your brake fluid level and add brake fluid if it’s low:

Tools and materials:

  • Clean rag
  • Brake fluid (DOT 4)
  • Funnel (optional)

Instructions:

  1. Open the hood of your Tesla Model 3.
  2. Locate the brake fluid reservoir. It’s a black plastic tank with a yellow cap.
  3. Clean the top of the brake fluid reservoir with a clean rag.
  4. Remove the brake fluid reservoir cap.
  5. Use a flashlight to inspect the brake fluid level. The fluid should be between the “MIN” and “MAX” lines on the reservoir.
  6. If the brake fluid level is low, add brake fluid until it reaches the “MAX” line.
  7. Replace the brake fluid reservoir cap and tighten it securely.
  8. Close the hood of your Tesla Model 3.

Solution 4: Inspect your brake sensors.

Faulty brake sensors can also cause problems with the emergency braking system. To have your brake sensors inspected, contact a Tesla Service Center.

2. Brake system issue

Solution 1: Check your brake fluid level.

If your brake fluid level is low, AVH may disable

I’ve already explained above how I check my brake fluid level and also how I replace it in situations where it’s low.

Solution 2: Inspect your brake pads and rotors.

If your brake fluid level is normal, then you need to inspect your brake pads and rotors, as they might be the cause of the problem. If your brake pads or rotors are worn, AVH may disable them.

If you are in a tight spot (unable to get it checked by a mechanic) and need to get your brake pads or rotors replaced, here’s how you can do that:

Tools and materials:

  • Jack and Jack stand
  • Wheel chocks
  • Lug wrench
  • Socket wrench set
  • Torque wrench
  • Brake cleaner
  • Brake caliper grease
  • New brake pads and rotors
  • C-clamp (optional)

Instructions:

  1. Park your car on a level surface and engage the parking brake.
  2. Chock the wheels behind the front tires.
  3. Use the lug wrench to loosen the lug nuts on the front wheels.
  4. Jack up the front of the car and place the jack stands under the designated jacking points.
  5. Remove the lug nuts and take off the front wheels.
  6. Use the socket wrench to remove the two bolts that secure the brake caliper to the steering knuckle.
  7. Carefully remove the brake caliper and hang it out of the way with a wire hanger or bungee cord.
  8. Use the brake cleaner to clean the rotor and the caliper mounting bracket.
  9. Inspect the rotor for any cracks or warping. If the rotor is damaged, replace it.
  10. Apply a thin coat of brake caliper grease to the back of the new brake pads.
  11. Install the new brake pads in the caliper.
  12. Reinstall the brake caliper on the steering knuckle and tighten the bolts.
  13. Install the front wheels and tighten the lug nuts.
  14. Lower the car and remove the jack stands.
  15. Repeat steps 6–13 on the other side of the car.

To replace the rotors:

  1. Remove the two bolts that secure the rotor to the hub.
  2. Remove the rotor.
  3. Clean the hub with brake cleaner.
  4. Apply a thin coat of brake caliper grease to the hub.
  5. Install the new rotor on the hub and tighten the bolts.
  6. Repeat steps 1–5 on the other side of the car.

Once you have replaced the brake pads and rotors, you need to bleed the brakes. This is to remove any air that may have gotten into the brake lines during the repair. You can bleed the brakes yourself or take the car to a professional mechanic.

To bleed the brakes:

  1. Fill the brake fluid reservoir to the “MAX” line.
  2. Attach a clear plastic hose to the bleeder screw on the caliper.
  3. Submerge the other end of the hose in a jar of brake fluid.
  4. Have someone press and release the brake pedal slowly several times.
  5. Watch the jar for bubbles. When the bubbles stop flowing, tighten the bleeder screw.
  6. Repeat steps 2–5 on the other side of the car.

Once you have bled the brakes, check the brake fluid level again and top it off if necessary.

Solution 3: Check your wheel speed sensors.

If one of your wheel speed sensors is not working properly, AVH may disable it. To check your wheel speed sensors, drive on a smooth, straight road at a constant speed. If you feel any vibration or pulsation in the brake pedal, it may be a sign that one of your wheel speed sensors is not working properly. Have your wheel speed sensors inspected by a qualified mechanic and replaced if necessary.

Solution 4: Restart your Tesla

Sometimes, a simple restart can fix minor software glitches. To restart your Tesla, go to Controls > Safety & Security > Power Off. Then, wait a few seconds and press the brake pedal to power the car back on.

Solution 5: Check for software updates.

Tesla regularly releases software updates that can fix bugs and improve the performance of your car. To check for software updates, go to Controls > Software > Software Update. If there’s an update available, install it and see if that fixes the problem.

3. Wheel speed sensor problems

Solution 1: Check the wheel speed sensor connector.

Make sure that the connector is clean and free of corrosion. If the connector is dirty or corroded, clean it with an electrical contact cleaner.

Solution 2: Inspect the wheel speed sensor wire.

After inspecting your wheel speed sensor wire, if you notice that it is damaged or broken, you need to get it fixed.

Here’s how to fix the wheel speed sensor wire:

Tools and materials:

  • Electrical tape
  • Wire nuts
  • Solder and soldering iron
  • Heat-shrink tubing (optional)

Instructions:

  1. Locate the damaged wheel speed sensor wire. It will be located near the wheel speed sensor, which is usually located on the wheel hub or spindle.
  2. If the wire is frayed but still intact, you can repair it with electrical tape. Simply wrap the tape around the damaged area until it is well insulated.
  3. If the wire is broken, you will need to splice it back together. To do this, strip the insulation off the ends of the wires and twist them together. Then, solder the twisted wires together and cover the soldered joint with heat-shrink tubing (optional).
  4. Once the wire is repaired, reconnect it to the wheel speed sensor and test the system.

This is kind of a temporary solution for this. A permanent solution would be to replace the wire.

Solution 3: Test the wheel speed sensor.

You can use a diagnostic tool to test the wheel speed sensor. If the sensor is not working properly, it will need to be replaced.

Solution 4: Replace the wheel speed sensors.

I once had a wheel speed sensor fail on my Tesla. The first sign was that the AVH system started to be disabled unexpectedly. Then, the ABS system warning light came on. I knew that I needed to get the problem fixed right away. After doing a test on the wheel speed sensors, I discovered that they needed to be replaced.

Here’s how to replace the wheel speed sensor:

Tools and materials:

  • Jack stands
  • Lug wrench
  • 10mm socket
  • Flat screwdriver
  • New wheel speed sensor

Instructions:

  1. Park your Tesla on a level surface and engage the parking brake.
  2. Loosen the lug nuts on the wheel where the wheel speed sensor is located.
  3. Jack up the car and support it with jack stands.
  4. Remove the lug nuts and wheel.
  5. Locate the wheel speed sensor. It is usually located on the hub or spindle.
  6. Use a 10mm socket to remove the bolt that secures the wheel speed sensor.
  7. Disconnect the electrical connector from the wheel speed sensor.
  8. Remove the wheel speed sensor from the hub or spindle.
  9. Install the new wheel speed sensor in reverse order.
  10. Reinstall the wheel and tighten the lug nuts.
  11. Lower the car and remove the jack stands.
  12. Tighten the lug nuts to the specified torque.

4. Software issue

Solution 1: Restart your Tesla.

Sometimes, a simple restart can fix minor software glitches. To restart your Tesla, go to Controls > Safety & Security > Power Off. Then, wait a few seconds and press the brake pedal to power the car back on.

Solution 2: Check for software updates.

Tesla regularly releases software updates that can fix bugs and improve the performance of your car. To check for software updates, go to Controls > Software > Software Update. If there’s an update available, install it and see if that fixes the problem.

Solution 3: Clear the Tesla cache.

Sometimes, a corrupted cache can cause software issues. To clear the Tesla cache, go to Controls > Software > More Software > Clear Cache.

Solution 4: Perform a power cycle.

A power cycle is a more comprehensive restart that can fix more complex software issues. To perform a power cycle, go to Controls > Safety & Security > Power Off. Then, wait 30 seconds and press the brake pedal to power the car back on.

5. Shifting to Neutral

How to Fix Shifting to Neutral in Your Tesla

  1. Use the Tesla touchscreen.

To shift to neutral using the touchscreen, go to Controls > Driving > Gear Selector and select Neutral.

  1. Use the gear selector stalk.

To shift to neutral using the gear selector stalk, press the stalk down once. If AVH is disabled, you will be able to shift to neutral even if the car is not stopped.

  1. Use the voice command.

To shift to neutral using the voice command, say “Shift to neutral.”

Conclusion

Automatic Vehicle Hold (AVH) is a safety feature that helps to prevent your Tesla from rolling backwards when you are stopped on a hill or other incline. However, AVH can sometimes be disabled due to a software issue or a hardware failure.

If AVH is disabled, you can still drive your Tesla, but you will need to be more careful when stopping and starting on hills and inclines. You should also be aware that the regenerative braking system may not work as expected when AVH is disabled.

If you are unable to fix the AVH issue yourself, you should take your Tesla to a Tesla Service Center for repair.

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