Steve Q

Think a fellow member had a similar issue and it was a wiring issue running from the battery to the ECU. Wiring runs under rear seat.

If it's not throwing up a fault I would just carry on 🙂

Taste

Have you had a diagnostic check?

Any warning blights on the dash. Could it be an electrical issue? What has the garage said who did the work?

I'd recommend a diagnostic check to see if any fault codes flag up. It could be an issue with the ballast.

Could be the handbrake module. You need to get a diagnostic check to see if any fault codes flag up.

Service history is key. Most common.issues with diesels are dpf, egr or turbo failure. If you do little mileage then I'd recommend you stick with petrol.

I'd definitely recommend a diagnostic check via a code reader. Even though you have done the right thing with the testing so far.

Changing the fob battery is your first port of call. Also if you have a spare key see if it does the same thing. If it doesn't then it could be a key issue.

I'd recommend you get a diagnostic check. Bare in mind it'll be a clutch and duel mass fly wheel change.

Sense

Audi should have notified the supplying dealer of the change. You might be able to refuse the car if it's not the spec ordered.

I'd recommend a diagnostic check to see if any fault codes flag up. It could be a clock spring and it's not unheard of them failing.

I think NGK are standard fit if I'm not mistaken

TT should be a direct fit. If the 8v one does fit I don't think buttons will work.

Could it be the brake servo?.

What has the supplying dealer said? You need to speak to Audi customer services and file a complaint.

Back

Welcome to the forum you'll find the members on here are a friendly and helpful bunch 🙂

Glad you got sorted 🙂

Thought I’d share a quick post. If anyone ever gets Error 3 on the CD interchanger of their Audi C5, it’s a 2 min fix. Take radio out Undo the 2 golden screws on the top side of the unit Lift top cover (the factory warranty void sticker will be cut as you lift the cover) You will see all the CD’s as a tower but one of the CD’s will be out of line. Gently tap the CD in line and done You’ll hear a click and a spring will bounce off and fit everything back in. Every person I asked said I need a new unit until I found an old thread online, thought I’d share this.

Looks a very smart c4. I'd recommend keeping it if it's got sentimental value in my opinion.

The belt is 5 years or 75k miles which ever comes first. The chain should be longer, if not for life of the engine.

Nice one 👍