my Volkswagen Golf MK7 (2015-2019) remote start not working what could be wrong

Volkswagen Golf MK8.5 (2024-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

549 words

Problem Statement

Learn how to diagnose and fix remote start issues in Volkswagen Golf MK7 (2015-2019). Step-by-step guide with diagnostic procedures 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 electrical systems to avoid shocks or shorts
•Ensure the vehicle is in park and the engine is off before performing diagnostics

Symptoms

•Remote start fails to activate when the button is pressed
•Dashboard lights indicate key fob is functioning (e.g., LED light blinks)
•Check engine light may illuminate
•Engine does not crank when attempting remote start
•Possible delay in response when pressing the remote start button

Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter to ensure it is sufficiently charged
2
Inspect the key fob battery; replace if necessary and test its functionality
3
Scan the vehicle’s onboard computer using an OBD-II scanner for any related trouble codes
4
Check the vehicle's security system status to ensure it is not preventing remote start
5
Verify that all doors, the hood, and the trunk are closed securely as they must be for the remote start to function
6
Confirm that the vehicle is not in a state that would disable remote start (e.g., in gear, engine running, or low fuel)

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
•Basic hand tools
•Replacement key fob battery

Parts Required

•Key fob battery (CR2032 or equivalent)
•Wiring harness (if any wiring repairs are needed)

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Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter to ensure it is sufficiently charged
2
Inspect the key fob battery; replace if necessary and test its functionality
3
Scan the vehicle’s onboard computer using an OBD-II scanner for any related trouble codes
4
Check the vehicle's security system status to ensure it is not preventing remote start
5
Verify that all doors, the hood, and the trunk are closed securely as they must be for the remote start to function
6
Confirm that the vehicle is not in a state that would disable remote start (e.g., in gear, engine running, or low fuel)

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, replacement key fob battery, basic hand tools.
Ensure the vehicle is parked on a flat surface and the engine is off. Disconnect the battery if necessary for safety.

2. Replace Key Fob Battery

Remove the key fob cover by pressing the release button and gently pulling it apart.
Replace the old battery with a new one (typically CR2032 or similar).
Reassemble the key fob and test the remote start function again.

3. Reset Security System (if applicable)

Tools Required: OBD-II scanner.
Use the OBD-II scanner to access the vehicle's security system settings.
Follow the manufacturer's instructions to reset the security system.
Reconnect the battery (if disconnected) and try the remote start again.

4. Inspect and Repair Wiring

Visually inspect the wiring around the remote start system for any signs of damage or corrosion.
Repair or replace any damaged wiring or connectors.
Ensure all connections are secure for the remote start system.

5. Test Remote Start Functionality

After completing repairs, test the remote start feature by pressing the remote start button multiple times.
Observe if the engine starts normally or if any dashboard warnings appear.