my Tesla Model S Plaid/Refresh (2021-present) keys won't unlock the doors what should I check

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

30 minutes - 1 hour

Time

medium

Difficulty

medium

Severity

3 min read

456 words

Problem Statement

Learn how to troubleshoot and fix key fob issues for Tesla Model S Plaid. Step-by-step guide with diagnostic steps and repair instructions.

Affected Component

Electrical

Estimated Time

30 minutes - 1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Handle the key fob carefully to avoid damaging internal components.

Symptoms

•Key fob not responding when attempting to unlock doors
•Doors remain locked despite button presses on the key fob
•Possible error messages on the vehicle's display
•Inability to start the vehicle with the key fob
•Indicator lights on the key fob not illuminating

Diagnostic Steps

1
Check the battery level of the key fob.
2
Inspect the key fob for physical damage or wear.
3
Verify that the key fob is within range of the vehicle.
4
Attempt to use the Tesla mobile app to unlock the doors.
5
Check for any software updates for the vehicle via the touchscreen.
6
Inspect the vehicle’s wireless receiver and antenna for obstructions.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Small flathead screwdriver
•CR2032 battery
•Tesla mobile app

Parts Required

•CR2032 battery

Related Faults

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Diagnostic Steps

1
Check the battery level of the key fob.
2
Inspect the key fob for physical damage or wear.
3
Verify that the key fob is within range of the vehicle.
4
Attempt to use the Tesla mobile app to unlock the doors.
5
Check for any software updates for the vehicle via the touchscreen.
6
Inspect the vehicle’s wireless receiver and antenna for obstructions.

Solution

1. Key Fob Battery Replacement

Sub-steps:
1. Open the key fob using a small flathead screwdriver to pry apart the two halves.
2. Remove the old battery (CR2032) and dispose of it properly.
3. Insert a new CR2032 battery with the positive side facing up.
4. Reassemble the key fob and ensure it snaps into place securely.

2. Reset Key Fob

Sub-steps:
1. Sit inside the vehicle with all doors closed.
2. Press the brake pedal and open the Tesla app.
3. Navigate to ‘Controls’ > ‘Key Fob’ > ‘Remove Key Fob’.
4. Follow the prompts to remove the current key fob from the vehicle’s memory.
5. Re-add the key fob by following the instructions for pairing a new key fob.

3. Inspect Vehicle Receiver

Sub-steps:
1. Open the front trunk (frunk) and locate the wireless receiver module.
2. Check for any visible damage or loose connections.
3. Ensure there are no obstructions blocking the antenna.
4. If necessary, reconnect any loose wiring and secure the receiver.