how to fix the remote entry problem in my Toyota Corolla E170 (2013-2019)?

Toyota Corolla E170 (2013-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

557 words

Problem Statement

Learn how to diagnose and fix remote entry issues in Toyota Corolla E170 (2013-2019). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on any electrical components to prevent short circuits.

Symptoms

•Key fob not responding when pressing buttons
•Vehicle does not lock or unlock remotely
•Red LED on key fob does not illuminate when buttons are pressed
•Lock/unlock function works with key only
•Dashboard warning light indicating a security issue (if applicable)

Diagnostic Steps

1
Check the key fob battery and replace if necessary.
2
Inspect the key fob for physical damage or water exposure.
3
Verify that the vehicle's battery is fully charged and in good condition.
4
Scan the vehicle's body control module for error codes using an OBD-II scanner.
5
Test the key fob frequency using a multimeter or frequency tester.
6
Attempt to reprogram the key fob by following the manufacturer's procedure.

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

•OBD-II scanner
•Multimeter
•Small screwdriver

Parts Required

•Key fob battery (CR2032)
•Replacement key fob (if necessary)

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Diagnostic Steps

1
Check the key fob battery and replace if necessary.
2
Inspect the key fob for physical damage or water exposure.
3
Verify that the vehicle's battery is fully charged and in good condition.
4
Scan the vehicle's body control module for error codes using an OBD-II scanner.
5
Test the key fob frequency using a multimeter or frequency tester.
6
Attempt to reprogram the key fob by following the manufacturer's procedure.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, small screwdriver, replacement key fob battery (if necessary).
Ensure the vehicle is in a well-ventilated area and the engine is off.

2. Verify Key Fob Battery

Sub-steps:
1. Open the key fob using a small screwdriver.
2. Remove the old battery from the fob.
3. Install a new battery (typically a CR2032) ensuring correct polarity.
4. Reassemble the key fob and test the remote entry function.

3. Inspect and Repair Key Fob

Sub-steps:
1. Examine the key fob for any visible signs of damage or corrosion.
2. If damaged, consider replacing the key fob with a new one.
3. If corrosion is present, clean the contacts with a soft cloth and isopropyl alcohol.

4. Check Vehicle Battery

Sub-steps:
1. Open the hood and inspect the vehicle battery for corrosion on terminals.
2. Clean any corrosion using a wire brush and apply terminal protector.
3. Use a multimeter to check the battery voltage (should be around 12.6 volts).
4. If the voltage is low, charge or replace the battery.

5. Reprogram Key Fob

Sub-steps:
1. Sit in the vehicle with all doors closed and locked.
2. Insert the key into the ignition and switch to the ON position without starting the engine.
3. Press and hold the "Unlock" button on the driver's door while turning the ignition ON and OFF twice, then release the button.
4. Press the "Lock" button on the key fob within 5 seconds.
5. Verify that the locks cycle to confirm successful programming.