how to replace the key fob battery for Tesla Model 3 Highland (2024-present)

Tesla Model 3 Highland (2024-present)

Error Codes

15-30 minutes

Time

easy

Difficulty

low

Severity

2 min read

398 words

Problem Statement

Learn how to replace the key fob battery for Tesla Model 3 Highland (2024-present). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

15-30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•None

Symptoms

•Key fob not responding to unlock/lock commands
•Key fob light not illuminating when buttons are pressed
•Intermittent range issues with the key fob
•Vehicle not recognizing the key fob when in proximity

Diagnostic Steps

1
Verify that the key fob is indeed unresponsive by attempting to unlock/lock the vehicle multiple times.
2
Determine if the issue persists with a second key fob, if available.
3
Check for any visible damage or wear on the key fob casing.

Solution

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 flat-head screwdriver
•Plastic pry tool

Parts Required

•CR2032 battery

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Solution

1. Preparation

Tools Required: None
Ensure you are in a well-lit area to work on the key fob.
Have a replacement battery ready (CR2032).

2. Open the Key Fob

Hold the key fob in one hand with the Tesla logo facing up.
Use a small flat-head screwdriver or a plastic pry tool to carefully insert into the seam of the key fob.
Gently pry apart the two halves of the key fob casing, taking care not to damage the plastic.

3. Remove the Old Battery

Once the key fob is opened, locate the battery compartment.
Carefully remove the old CR2032 battery by sliding it out, noting the orientation (positive side facing up).

4. Install the New Battery

Insert the new CR2032 battery into the compartment, ensuring it is oriented correctly (positive side up).
Press down gently to secure the battery in place.

5. Reassemble the Key Fob

Align the two halves of the key fob casing.
Press them together firmly until they snap back into place, ensuring there are no gaps.