my Toyota Corolla E170 (2013-2019) key fob is not working, how can I fix it?

Toyota Corolla E170 (2013-2019)

Error Codes

30 minutes to 1 hour

Time

medium

Difficulty

medium

Severity

3 min read

465 words

Problem Statement

Learn how to diagnose and fix a non-working key fob for Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and solutions.

Affected Component

Electrical

Estimated Time

30 minutes to 1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Handle the battery carefully; do not short-circuit it.

Symptoms

•Key fob buttons do not respond when pressed
•Vehicle does not unlock/lock with the fob
•Engine does not start with the fob in the vicinity
•Warning light on the dashboard indicating a key fob issue
•Reduced range when attempting to use the key fob

Diagnostic Steps

1
Check the battery of the key fob using a multimeter to ensure it has sufficient voltage.
2
Inspect the key fob for physical damage such as cracks or water exposure.
3
Reprogram the key fob by following the specific reprogramming steps for the Toyota Corolla E170.
4
Test the key fob's signal using an OBD-II scanner if available.
5
Check the vehicle's antenna and internal receiver for any faults or 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

•Flathead screwdriver
•Multimeter
•OBD-II scanner

Parts Required

•CR2032 battery

Related Faults

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Diagnostic Steps

1
Check the battery of the key fob using a multimeter to ensure it has sufficient voltage.
2
Inspect the key fob for physical damage such as cracks or water exposure.
3
Reprogram the key fob by following the specific reprogramming steps for the Toyota Corolla E170.
4
Test the key fob's signal using an OBD-II scanner if available.
5
Check the vehicle's antenna and internal receiver for any faults or obstructions.

Solution

1. Battery Replacement

Remove the key fob cover: Use a small flathead screwdriver to gently pry open the key fob.
Replace the battery: Take out the old battery, noting its orientation, and replace it with a new CR2032 battery (or the specific type for your model).
Reassemble the key fob: Snap the cover back into place ensuring it’s securely closed.

2. Reprogramming the Key Fob

Enter the vehicle: Ensure all doors are closed.
Insert the key into the ignition: Turn it to "ON" without starting the engine, and then back to "OFF".
Repeat: Do this 5 times within 10 seconds, ending in the "ON" position.
Press the lock button on the key fob: Within 30 seconds, press the lock button on the fob to program it.
Turn the ignition to "OFF": This will complete the programming process.

3. Testing the Key Fob

Test the key fob functions: Attempt to lock and unlock the vehicle doors from a distance.
Check starting the engine: Ensure the vehicle starts with the fob inside.