Audi A8 - Recent Questions, Troubleshooting & Support


Have you check your power steering system?

Audi A8 Cars &... | Answered on Dec 13, 2018


Check this website you fine there fuse box diagram and description for Audi A4

http://www.carknowledge.info/category/audi/a4

2000 Audi A8 | Answered on Jun 30, 2018


I suggest you try one of those instant download manuals. My nephew bought one for me when my car broke and we could fix it all by ourselves with the manual costing $10. This website reliable-store.com is very good for this.
?Try it.

2006 Audi A8 | Answered on Jan 26, 2018


Hi Barry,

Sometimes, the locking mechanism closes while the lid remains open. Simply press your unlocking button on your fob, or in the vehicle. Then try to close the lid again.

Audi A8 Cars &... | Answered on Jan 22, 2018


It would help to know year and model (and therefore gearbox model) of your A8.
The 5HP24A in the D2 series (circa 1997 to 2002/3) has several issues and are commonly regarded as "fragile".

I have never experienced this when changing my fluid (I have a 2001 S8), but I have read reports that some filters have pick up tubes that are too long and need to be trimmed back or the gearbox can suffer from fluid starvation, particularly when pushed.
Also check that the gearbox sump has not suffered from any impacts. The fluid pick up is roughly central to the sump at the deepest area (both the oil drain and fill plugs are higher).

Was the work performed by an Audi or ZF specialist? There is a particular fill procedure which must be followed.


The gearbox can also suffer from pressure spikes (particularly in early models) which can damage the Clutch A basket, which is used for gears 1-3. However any damage here will result in immediate limp mode (all gears lit up on the DIS screen and gearbox locked in 4th gear).

Audi A8 Cars &... | Answered on Nov 03, 2017


Temp sensor is at the right hand rear of the engine (left side when looking from the front). You can get to it from above without too much issue.
They regularly fail and are a cheap replacement part. They don't throw diagnostic codes. Go genuine, or Bosch.

To replace, you pull the retaining clip out to the rear (be careful, they get dropped easily). The sensor itself pulls out, but will probably be stuck in slightly, so don't damage the cars plug pulling it out (disconnect plug first).
Make sure the o-ring comes out too, or go fishing for it (they can be brittle and break with age). New sensor will come with a new o-ring.

2000 Audi A8 | Answered on Oct 02, 2017


Check the connection on the bulb? Check the fuse for that side in the fusebox.It will tell you which fuse it is on the underside of the fuse cover.Failing this you need to replace the bulb

2006 Audi A8 4.2 | Answered on Sep 21, 2017


internal transmission failure. if you take this to the dealer they will only replace the transmission. You might look for an independant repair shop that specialies in german transmission repairs.

Audi A8 Cars &... | Answered on Aug 07, 2017


Number one trick is to always maintain power when you swap an old battery for a new one. You just need a couple of lengths of wire or a set of jump leads.

The system is not a learning one. You need the dealer to connect it up to a computer and reprogram the Body Control Module.

You can try one thing first though. Disconnect the battery for at least 2 hours. Touch the two leads together for 5 minutes to ensure full dissipation of power. Put the key in the ignition, but not switched on. Connect the negative lead. Connect the positive lead in one swift movement. Leave the system for 15 minutes to reset.

Whilst the battery is disconnected, you can pull each fuse and visually inspect them for breaks.

2006 Audi A8 | Answered on Aug 05, 2017


indicates a TCM problem
run the fault codes to determine the exact problem area

2004 Audi A8 | Answered on Jul 30, 2017


Water is fine since its warmer weather coolant is used mainly so it doesn't freeze as water would. You should be fine as long temps don't get below 32 degrees waters freezing point.

2006 Audi A8 4.2 | Answered on Jul 06, 2017


Squeal could be idler pulley bearings. If someone has taken off the door panel, could be that a connector was not properly reconnected. Could also be fuses if you have not checked. Don't spend that kind of money until you know what is wrong.

2008 Audi A8 | Answered on May 08, 2017


Fuel filter, TPS sensor, clean throttle body.

Audi A8 Cars &... | Answered on Apr 09, 2017


Park is release by a small solenoid, the solenoid is powered up by the brake light circuit, so if the brake lights don't work due to a bad switch or wiring issue at the switch park will no release. If the brake lights do work then the wiring to the solenoid may be defective or the solenoid is sticking. Every car I have ever worked on has a bypass for the park lock, check your owner's manual for information on bypassing the lock out when this type of problem occurs.

1998 Audi A8 | Answered on Mar 20, 2017

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