why is my Toyota Corolla E170 (2013-2019) having issues with the remote keyless entry

Toyota Corolla E170 (2013-2019)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

534 words

Problem Statement

Learn how to diagnose and fix remote keyless entry issues in the 2013-2019 Toyota Corolla E170. Step-by-step guide with symptoms and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the ignition is off while working on the key fob.
•Disconnect the battery if working on the keyless entry antenna to prevent electrical shorts.

Symptoms

•Remote key fob not responding when buttons are pressed
•Indicator lights on the key fob not illuminating
•Vehicle does not respond to the key fob within a specified range
•Remote entry works intermittently
•Battery warning light illuminated on the dashboard (if applicable)
•Physical lock/unlock button on the driver’s side door works but remote does not

Diagnostic Steps

1
Check the battery status of the key fob using a multimeter.
2
Inspect the key fob for any physical damage or water exposure.
3
Replace the key fob battery if it is low or dead.
4
Reprogram the key fob to the vehicle's system if necessary.
5
Scan the vehicle’s computer for any error codes related to the keyless entry system.
6
Inspect the vehicle’s keyless entry antenna for damage or disconnection.

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 Phillips screwdriver
•Flat-head screwdriver

Parts Required

•Replacement key fob battery (CR2032)
•Keyless entry antenna (if damaged)

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Symptoms

•Remote key fob not responding when buttons are pressed

•Indicator lights on the key fob not illuminating

•Vehicle does not respond to the key fob within a specified range

•Remote entry works intermittently

•Battery warning light illuminated on the dashboard (if applicable)

•Physical lock/unlock button on the driver’s side door works but remote does not

Diagnostic Steps

1
Check the battery status of the key fob using a multimeter.
2
Inspect the key fob for any physical damage or water exposure.
3
Replace the key fob battery if it is low or dead.
4
Reprogram the key fob to the vehicle's system if necessary.
5
Scan the vehicle’s computer for any error codes related to the keyless entry system.
6
Inspect the vehicle’s keyless entry antenna for damage or disconnection.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, small Phillips screwdriver, replacement key fob battery (CR2032), and a flat-head screwdriver.
Ensure the vehicle is parked safely and the ignition is off.

2. Check and Replace Key Fob Battery

Sub-step 1: Open the key fob using the flat-head screwdriver to gently pry apart the two halves.
Sub-step 2: Remove the old battery and note the orientation.
Sub-step 3: Insert the new battery (CR2032) in the correct orientation (+ side facing up).
Sub-step 4: Snap the key fob back together securely.

3. Reprogram Key Fob

Sub-step 1: Insert the key into the ignition and turn it to the "On" position without starting the engine.
Sub-step 2: Press and hold the "Lock" button on the key fob for approximately 5 seconds.
Sub-step 3: Turn the ignition off and remove the key, then test the key fob to ensure it locks/unlocks the doors.

4. Inspect and Repair Keyless Entry Antenna

Sub-step 1: Remove the plastic cover around the vehicle’s keyless entry module, usually located near the driver's side or under the dashboard.
Sub-step 2: Check the connections and wiring for wear or damage.
Sub-step 3: If damaged, repair or replace the wiring/antenna as needed.
Sub-step 4: Reassemble any removed components and test the keyless entry system.