Audi A8 D3 Keyless Entry ECU Module Siemens Water Damage Repair Service


MotorTronics provides a prompt test and repair service for your electronic modules, The modules goes through various repair processes to ensure previously faulty parameters are fully repaired, only after this, we pass it and it’s ready for dispatch.

All that is left for you to do is

1. Click Buy it Now / Add to Cart
2. Fill in the Order Form / Packaging Slip provided after the payment page.
3. Send your Module with the Order Form
4. Await repair while we have your part(s)
5. Once received simply Plug it in and turn the key.
6. In some cases you will require diagnostics to adapt / clear codes.


This is a repair service for your Audi A8 (2004-2009) D3 Keyless Entry ECU Module Siemens Immobiliser / KESSY (Keyless Entry and Start System)  if it has suffered water ingress,

These are located under the Passenger seat in UK vehicles and are prone to get water damage if the water drains are blocked.

Some of the common issues you might experience are;

  • Complete non starting
  • Central locking not working
  • Windows not going up or down
  • Unresponsive central locking buttons
  • Locking and unlocking of doors, boot, bonnet function.
  • door locks making noise but won’t lock
  • Convertible top not working
  • Interior lights not turning on or off
  • Continuous open circuit faults when diagnosed
  • No communications through the diagnostic connector.

If you are getting any similar faults send your module to us for a full Test and Repair service.