why does my Tesla Model 3 Highland (2024-present) display show a red car with a key icon?

Tesla Model 3 Highland (2024-present)

Error Codes

30 minutes - 1 hour

Time

medium

Difficulty

medium

Severity

3 min read

462 words

Problem Statement

Learn how to resolve keyless entry issues in Tesla Model 3 Highland (2024-present). Step-by-step guide for diagnosing and fixing the problem.

Affected Component

Electrical

Estimated Time

30 minutes - 1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in a safe state before performing any repairs or checks.

Symptoms

•Red car icon with a key symbol displayed on the screen
•Inability to unlock or start the vehicle using the key fob or phone
•Warning messages related to keyless entry or authentication
•Vehicle may not respond to key fob commands
•Potential alerts regarding low battery in key fob

Diagnostic Steps

1
Check the key fob battery level using a multimeter or by replacing it with a new battery.
2
Ensure that the key fob is within the operational range of the vehicle.
3
Attempt to unlock the vehicle using the physical key (if applicable).
4
Scan the vehicle's onboard diagnostics for any error codes related to the keyless entry system.
5
Restart the vehicle by powering it off completely and then turning it back on.

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 screwdriver
•Multimeter
•None

Parts Required

•Key fob battery (CR2032)

Related Faults

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Diagnostic Steps

1
Check the key fob battery level using a multimeter or by replacing it with a new battery.
2
Ensure that the key fob is within the operational range of the vehicle.
3
Attempt to unlock the vehicle using the physical key (if applicable).
4
Scan the vehicle's onboard diagnostics for any error codes related to the keyless entry system.
5
Restart the vehicle by powering it off completely and then turning it back on.

Solution

1. Preparation

Gather all necessary tools and replacement parts.
Ensure the vehicle is parked safely and in a well-ventilated area.

2. Replace Key Fob Battery

Tools Required: Small screwdriver, new key fob battery (CR2032).
Carefully open the key fob using a small screwdriver.
Remove the old battery and insert the new CR2032 battery, ensuring correct polarity.
Reassemble the key fob and test its functionality.

3. Re-Pair Key Fob to Vehicle

Tools Required: None.
Enter the vehicle and ensure it is powered on.
Go to the settings menu on the touchscreen, select "Locks", and then choose "Add Key".
Follow the prompts to pair the key fob with the vehicle again.
Confirm successful pairing by testing the key fob functions.

4. Inspect Vehicle Software

Tools Required: None.
Ensure the vehicle's software is up to date by checking the "Software" section in the settings menu.
If an update is available, follow the instructions to update the software.