Wabco Suspension Repair Kit Fitted - DO I NEED TO RESET FAULT CODES?

[Lionheart]

Hi guys

Having a bit of a nightmare.

I've had the car since May. It went it for a service and to get a few niggly little bits done (door locks etc). Bit of a head scratcher for the garage, and was with them almost two months.

Picked it up and Suspension fault warning. Assumed the battery was low. Drove home, recharged battery, and it still came up. Tried moving the suspension and Compressor Charging warning - whcih I'd NEVER seen before even with a low battery.

So, they fitted the Wabco compressor repair kit.

But it's showing the same fault.

Does the fault need to be cleared?? Or is it likely the fault lays elsewhere?

[JFP in PA]

Hi guys

Having a bit of a nightmare.

I've had the car since May. It went it for a service and to get a few niggly little bits done (door locks etc). Bit of a head scratcher for the garage, and was with them almost two months.

Picked it up and Suspension fault warning. Assumed the battery was low. Drove home, recharged battery, and it still came up. Tried moving the suspension and Compressor Charging warning - whcih I'd NEVER seen before even with a low battery.

So, they fitted the Wabco compressor repair kit.

But it's showing the same fault.

Does the fault need to be cleared?? Or is it likely the fault lays elsewhere?

Let's start with the basics: What model and year?

[RFM]

Hard to say, it can be anything a blown fuse, compressor electric motor, air leak in the pipes or suspension bellows, air distributor, air supply tank, control box, etc. With a PIWIS diagnostictool or similar, the problem can be examined.

[Lionheart]

It's a 2004 4.5 S.

They checked for obvious leaks, but could not visually see anything.

Note that the suspension warning beep and display warning happens IMMEDIATELY as you start the car. Not a few seconds after starting as some people report.

They also changed the front discs and pads. Not sure if the sensor wires are nearby?

[JFP in PA]

It's a 2004 4.5 S.

They checked for obvious leaks, but could not visually see anything.

Note that the suspension warning beep and display warning happens IMMEDIATELY as you start the car. Not a few seconds after starting as some people report.

They also changed the front discs and pads. Not sure if the sensor wires are nearby?

Get the vehicle scanned for codes, note them, then clear them and see if the warning returns.

[Lionheart]

That's why I asked actually.

Normally after fitting the Webco kit, do the codes HAVE to be reset, or should it just start working normally again assuming that the fix was successful?

[JFP in PA]

That's why I asked actually.

Normally after fitting the Webco kit, do the codes HAVE to be reset, or should it just start working normally again assuming that the fix was successful?

Until the vehicle is scanned, you really won't know, but any competent shop should not have released a vehicle that was coding after any type of service........................

[hahnmgh63]

As mentioned definitely have the codes cleared first then attempt to drive a few Km/Miles. If that doesn't work (worked for some), then you, may need to have the level calibration done which worked in my case. Definitely need Durametric or PIWIS scan to see what the codes actually still are.

[Lionheart]

Thanks guys. Guess that's my next step...

[hahnmgh63]

As you mentioned, most, including me that had the suspension warning had it happen a little bit after startup, for me it would occur after about 1KM of driving, quicker on colder than warmer days. Now, my girlfriends Audi A8, believe it or not almost the identical suspension (all components are of the same manufacturers, just different types of course) had it happen right away. I rebuilt the compressor and nothing, ended up having to replace the suspension control module with a good used one. You definitely need to scan the codes.

[Lionheart]

Thanks for that - interesting!!

Yes, on mine it come up beep straight away as the engine starts.

It's going to another garage for a full diagnostic scan. We'll see...