Project Audi A4 Quattro: Part 2 – VAG-COM Fixes, Cam Follower and Coil Packs
Shortly into our ownership of this Audi we began to become annoyed by some of its beeps and bongs. Why does the seatbelt chime need to sound when we've only just put the key in the ignition? It's not as if the car is running or we're in any danger.
Thanks to the magic of Ross-Tech's VCDS Software and VAG-COM cable we've been able to code away our annoying seatbelt chime, program remote window control and one click unlock from the key, diagnose two misfiring cylinders, and clear our check engine light. It's now past time to return this tool to Jeff (my apologies).
The VCDS interface itself is very easy to use, be sure to visit the Ross-Tech site for the latest version of the software and Audizine for a simple walk through for reprogramming various features of the car. Using the VAG-COM cable you can perform a full diagnostic on your car, code High Beams + Fogs, program an aux cable interface for your iPod and much more. Here are a couple of screen shots from the process along the way.
Oh right, about that check engine light. Our car has suffered from misfires on two occasions. The first time that trouble occurred we had speculated that this may have had something to do with the coil packs but we wanted to have Audi check the car over due to a PCV valve recall campaign that was still active for the car. Audi techs duly checked things out and replaced the PCV components under warranty but this did not resolve the misfires. We then went ahead and replaced the two coil packs that showed the misfires and resolved the issue. Life was good for a few thousand miles until the misfire returned which we now seem to have resolved for good by replacing the remaining two coil packs. Score one for the base motor, we only had 4 coil packs to replace rather than 8 as we would in an S4!