my Volkswagen Tiguan Second Generation (2018-present) won’t lock with the key fob what to do

Volkswagen Tiguan 2nd Gen (2018-Present)

Error Codes

30-60 minutes

Time

medium

Difficulty

medium

Severity

3 min read

526 words

Problem Statement

Learn how to diagnose and fix key fob issues in Volkswagen Tiguan. Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Electrical

Estimated Time

30-60 minutes

⚠️ Safety Warnings

Important safety information - read before proceeding

•Ensure the vehicle is off and in a safe area before working on electrical components.

Symptoms

•Key fob buttons unresponsive
•Vehicle does not lock or unlock with key fob
•Indicator lights on the dashboard may or may not be functioning
•Manual locking works but not remote locking
•Battery warning light on the key fob may be illuminated

Diagnostic Steps

1
Check the key fob battery for any signs of depletion or corrosion.
2
Attempt to lock the vehicle using the key fob while standing close to the car.
3
Inspect the vehicle's central locking system for any blown fuses.
4
Test the key fob with another vehicle of the same make and model if available.
5
Use an OBD-II scanner to check for any fault codes related to the keyless entry system.

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

•Small flathead screwdriver
•Multimeter
•Fuse pullers (optional)

Parts Required

•Replacement key fob battery (CR2032 or as specified)

Related Faults

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Diagnostic Steps

1
Check the key fob battery for any signs of depletion or corrosion.
2
Attempt to lock the vehicle using the key fob while standing close to the car.
3
Inspect the vehicle's central locking system for any blown fuses.
4
Test the key fob with another vehicle of the same make and model if available.
5
Use an OBD-II scanner to check for any fault codes related to the keyless entry system.

Solution

1. Preparation

Gather tools: Small flathead screwdriver, multimeter, replacement key fob battery (CR2032 or as specified in the owner’s manual).
Ensure the vehicle is in a safe area and turned off.

2. Replace Key Fob Battery

Sub-step 1: Open the key fob using a small flathead screwdriver to pry apart the two halves carefully.
Sub-step 2: Remove the old battery and inspect the battery contacts for corrosion or damage.
Sub-step 3: Insert the new battery with the correct polarity (positive side facing up).
Sub-step 4: Reassemble the key fob ensuring it clicks back together securely.

3. Check and Replace Fuses

Sub-step 1: Locate the fuse box (usually under the dashboard or in the engine compartment).
Sub-step 2: Identify the fuse for the central locking system using the diagram on the fuse box cover.
Sub-step 3: Remove the fuse using fuse pullers and check for continuity with a multimeter.
Sub-step 4: Replace any blown fuses with new ones of the same amperage rating.

4. Reprogram Key Fob (if necessary)

Sub-step 1: Sit in the vehicle and close all doors.
Sub-step 2: Insert the key into the ignition and turn it to the "On" position without starting the engine.
Sub-step 3: Press the lock button on the key fob while the key is in the ignition.
Sub-step 4: Turn the key back to the "Off" position and remove it; test the key fob.