my Toyota Corolla E170 (2013-2019) key fob won't work, how to reprogram it?

Toyota Corolla E170 (2013-2019)

Error Codes

30 minutes

Time

medium

Difficulty

medium

Severity

3 min read

483 words

Problem Statement

Learn how to reprogram the key fob for your 2013-2019 Toyota Corolla E170. Step-by-step guide with diagnostic steps and solutions.

Affected Component

Electrical

Estimated Time

30 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•None specifically applicable for this procedure.

Symptoms

•Key fob buttons are unresponsive
•Engine does not start with the key fob present
•Security indicator light flashes when attempting to use the key fob
•Unsuccessful remote unlocking or locking of doors
•No response from the vehicle when pressing the key fob

Diagnostic Steps

1
Check the key fob battery for charge and replace if necessary.
2
Ensure that the key fob is within range of the vehicle.
3
Verify that the vehicle's battery is fully charged and operational.
4
Inspect the key fob for physical damage or wear.
5
Attempt to unlock the vehicle manually to ensure other systems are functioning.

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

•Flathead screwdriver

Parts Required

•CR2032 battery

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Diagnostic Steps

1
Check the key fob battery for charge and replace if necessary.
2
Ensure that the key fob is within range of the vehicle.
3
Verify that the vehicle's battery is fully charged and operational.
4
Inspect the key fob for physical damage or wear.
5
Attempt to unlock the vehicle manually to ensure other systems are functioning.

Solution

1. Preparation

Gather Tools:
- Replacement battery (if needed: CR2032)
- Flathead screwdriver (for battery replacement)
Safety Warning: No specific safety warnings are required for this procedure.

2. Replace Key Fob Battery (if necessary)

Use a flathead screwdriver to carefully pry open the key fob casing.
Remove the old battery and replace it with a new CR2032 battery, ensuring the positive (+) side is facing up.
Snap the fob back together securely.

3. Reprogram Key Fob

Enter Programming Mode:
- Sit in the driver's seat with all doors closed.
- Insert the key into the ignition and turn to the "ON" position (do not start the engine).
- Turn the key back to "OFF" and remove it from the ignition.
Initiate Programming:
- Within 5 seconds, insert the key back into the ignition and turn to "ON" position again.
- Turn the key back to "OFF" and remove it.
- Repeat this step a total of 3 times (ON, OFF, remove). On the third time, leave it in the "ON" position.
Program the Key Fob:
- Press any button on the key fob within 60 seconds. The doors should lock and unlock to confirm successful programming.
- If programming more than one key fob, repeat the button press on each fob within the 60-second window.

4. Test Key Fob

Exit the vehicle and test the key fob functionality by locking and unlocking the doors.
Attempt to start the vehicle with the key fob.