Volkswagen Golf MK7 (2015-2019) key fob not working what should I do

Solution

1. Preparation

• Gather necessary tools and materials.
• Tools Required:
  • Multimeter
  • OBD-II scanner
  • Small flathead screwdriver (for fob disassembly)
• Safety Warnings:
  • Ensure the vehicle is in park and the engine is off while working on the key fob.

2. Replace Key Fob Battery

• Remove the key fob casing:
  • Use a small flathead screwdriver to pry open the fob.
• Extract the old battery:
  • Carefully remove the battery, noting the orientation.
• Install the new battery:
  • Insert a new battery (typically CR2032) in the same orientation as the old one.
• Reassemble the key fob:
  • Snap the casing back together securely.

3. Reprogram Key Fob (if necessary)

• Enter the vehicle with the working key.
• Turn the ignition to the ON position (do not start the engine).
• Press and hold the unlock button on the fob for approximately 5 seconds.
• Turn the ignition to OFF and then back to ON.
• Repeat the unlock process to ensure the fob is programmed.

4. Test Functionality

• Step outside the vehicle and attempt to lock and unlock the doors using the key fob.
• Check additional functions (trunk release, panic button) to ensure all features are operational.