my Volkswagen Tiguan Second Generation (2018-present) remote start not working what could be wrong

Volkswagen Tiguan 2nd Gen (2018-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

506 words

Problem Statement

Learn how to diagnose and fix remote start issues in Volkswagen Tiguan (2018-present). Step-by-step guide with symptoms, diagnostic steps, and solutions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the vehicle’s battery if working on electrical components to avoid shocks.

Symptoms

•Remote start button does not respond when pressed
•"Remote Start Disabled" message displayed on dashboard
•Engine cranks but does not start
•Key fob battery low warning
•Vehicle doors do not lock/unlock remotely

Diagnostic Steps

1
Check the battery level of the key fob using a multimeter.
2
Inspect the vehicle’s manual for any specific remote start restrictions (e.g., doors not closed, hood open).
3
Use an OBD-II scanner to check for any error codes related to the immobilizer or remote start system.
4
Verify that the vehicle is in park mode and the brake pedal is not pressed (if applicable).
5
Check the status of the vehicle’s battery to ensure it has sufficient charge to support remote functions.
6
Confirm that the remote start feature is enabled in the vehicle settings.

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 flathead screwdriver

Parts Required

•CR2032 key fob battery

Related Faults

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Diagnostic Steps

1
Check the battery level of the key fob using a multimeter.
2
Inspect the vehicle’s manual for any specific remote start restrictions (e.g., doors not closed, hood open).
3
Use an OBD-II scanner to check for any error codes related to the immobilizer or remote start system.
4
Verify that the vehicle is in park mode and the brake pedal is not pressed (if applicable).
5
Check the status of the vehicle’s battery to ensure it has sufficient charge to support remote functions.
6
Confirm that the remote start feature is enabled in the vehicle settings.

Solution

1. Preparation

Gather necessary tools: OBD-II scanner, multimeter, replacement key fob battery (if needed).
Ensure the vehicle is parked on a level surface and the engine is off.

2. Key Fob Battery Replacement

Open the key fob using a small flathead screwdriver.
Remove the old battery (typically CR2032) and replace it with a new one, ensuring correct orientation.
Reassemble the key fob and test the remote start function.

3. Check and Reset Vehicle Settings

Start the vehicle using the ignition key.
Navigate to the vehicle settings on the infotainment system.
Locate the remote start option and ensure it is enabled. If it was already enabled, disable and then re-enable it to reset the setting.

4. Inspect and Connect Battery

Open the hood and check the battery connections for corrosion or looseness.
Clean terminals if necessary and ensure that connections are secure.
If the battery voltage is low, jump-start or replace the battery as needed.

5. Scan for Fault Codes

Connect the OBD-II scanner to the vehicle's diagnostic port.
Run a diagnostic scan to identify any codes related to the remote start or immobilizer system.
If any codes are present, address the specific issues indicated (e.g., faulty sensors, wiring issues).