how to troubleshoot the key fob not working for my Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

30 minutes to 1 hour

Time

medium

Difficulty

medium

Severity

3 min read

472 words

Problem Statement

Learn how to troubleshoot and fix a non-functioning key fob for your 2013-2019 Toyota Corolla E170. Step-by-step guide with diagnostic and repair instructions.

Affected Component

Electrical

Estimated Time

30 minutes to 1 hour

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is in 'Park' before attempting to start the engine.

Symptoms

•Key fob buttons unresponsive
•Inability to lock or unlock doors remotely
•Engine not starting with key fob present
•Indicator light on fob not illuminating when buttons are pressed
•Check key fob message displayed on dashboard

Diagnostic Steps

1
Check the battery level of the key fob using a multimeter.
2
Replace the battery in the key fob and test the operation.
3
Inspect the key fob for physical damage, such as cracks or water exposure.
4
Verify that the vehicle's battery is functioning properly.
5
Reprogram the key fob to the vehicle if necessary.
6
Check for interference from other electronic devices nearby.

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

•Screwdriver
•Flathead tool
•Replacement battery (typically CR2032)
•Multimeter

Parts Required

•Replacement battery (CR2032)

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Diagnostic Steps

1
Check the battery level of the key fob using a multimeter.
2
Replace the battery in the key fob and test the operation.
3
Inspect the key fob for physical damage, such as cracks or water exposure.
4
Verify that the vehicle's battery is functioning properly.
5
Reprogram the key fob to the vehicle if necessary.
6
Check for interference from other electronic devices nearby.

Solution

1. Preparation

Gather necessary tools: screwdriver, flathead tool, replacement battery (typically CR2032), multimeter.
Ensure the vehicle is in a secure location and that the doors are closed.

2. Replace Key Fob Battery

Use a small screwdriver to pry open the key fob casing gently.
Remove the old battery, noting the orientation of the battery (+/-).
Insert the new battery into the fob, ensuring correct polarity.
Snap the fob casing back together securely.

3. Test Key Fob Functionality

Stand within proximity to the vehicle and press the lock/unlock buttons.
Observe the indicator light on the fob; it should illuminate when buttons are pressed.
Attempt to start the vehicle using the key fob.

4. Reprogram the Key Fob (if necessary)

Sit in the vehicle with all doors closed and the key fob inside.
Insert the key into the ignition and turn it to the "On" position without starting the engine.
Press the lock button on the key fob within 5 seconds and turn the ignition off.
Repeat this process two more times to complete the programming.
Test the key fob functionality again.