Top 20 1999 Audi A4 Questions & Answers

Question edited for clarity and toss in some CPAS Question moved to model category. In the link https://www.google.com/search?q=1999+audi+a4+signal+flasher+relay+location ..

go to a dealer with vin and proof of ownership and have them cut you new keys --or search and see if any locksmiths have the authorization to do same

Audi fuses that are not in the cabin are located in the ECU box behind the fire wall.

I suggest you to do an ecm diagnostic to see if you have any codes stored. After that you can go from there, you might have an issue with the theft system. good luck.

Open remote clean contacts w/alcohol get the correct battery--or go back to the owner -bull

compression test check for internal crack in turbo replace plugs check for blown head gasket

When was the last time you had the timing belt replaced? If it broke, you likely have internal damage. Hope it's something else, but this is a possibility since it had a belt and not a chain.

What exactly are the symptoms is it just taking a lot to crank over and start? Is it starting and shutting right off you need to add more details

Sounds like you have either a shorted fuel pump driver ground or a sticking fuel injector or injectors. Remove the injector electrical plugs and see if it still flood if it does then then one or more injectors are defective, if not then the engine wiring harness is grounded to one or more injectors or the PCM (powertrain control module) is defective. Remove the spark plugs to ID which cylinder is defective, disable the ignition system when you do this or the gas squirting out the spark plug hole can ignite (been there)

You may have fuel coming out but do you have enough fuel pressure? Also have you checked to make sure you have spark?

I do not understand what you mean. If the engine starts it is turning over. Turning over means the engine turns not that it starts. So the engine cranks but does not start? You need to check the crank position sensor. It should have 3 wires at the connector. 1 is power 12V, 1 is ground and the other is the square wave signal. with a volt meter make sure you have power at the wire closest to the curves side of the connector. Check resistence to ground on the wire closest to the square end of the connector. You cannot check the signal with out a lab scope or graphing multi meter. If power and ground are good you need a mechanic.

The throttle body itself is just a casting and should not need to be replaced. The throttle within controls the amount of air going into the engine. It should not need to be replaced. The critical part that is sending information to the ecu (computer) is the Throttle possition indicator. if it has come up as an error code it could be bad contacts. Corrosion causes funny problems. Scrape the contacts to bright metal, reassemble check codes again. Still a problem replace the sensor.

Get a Chilton/Haynes repair manual that covers this vehicle. It will, with pictures, show you where fuel filter is and how to change it.

First step check the fluid level (engine warmed up and in neutral. If trans has enough oil but smells or looks burnt you have issues that require a transmission specialist who will most likely rebuild or replace the entire unit

1) Open trunk 2) Remove small round plastic access panel with a flat tip screw driver by prying open 3) Remove flat tip screw holding tail light assembly 4) Remove tail light assembly by pulling outward, careful not to break plastic guide/nub 5) Disconnect wiring connectors 6) Remove plastic housing access plate on back of tail light assembly by twisting/turning tabs until they click and then lift access plate from tail light assembly 7) When viewing the the bulbs, the turn signal bulb is the bottom left bulb 8) Install in reverse order, ensuring tail light seal seats properly during installation

This is an electronic transmission and may have an electrical problem Can\'t tell without more info. However, it will not go into top gear if you are pressing hard on the throttle. try going at highway speed and letting off the throttle It should shift into high gear. If it does not, it is dealer time.

check for a broken rear engine mount as it may have failed from the torque reaction and now will not allow the shifter to work.

It's located on the front cover of your audio manual, 4 digit number. If you do not have the manual, call Audi USA and give them your VIN and verify ownership of vehicle and they will give you the 4 digit code

Number 39 in the fuse box. indicates emergency flasher. secondly, if the fuse if good, you need to check the relay for the turn signals. the relays are right behind the fuse box. you might have to loosen some covers to get to it.

Best advise is to purchase a Chilton/Haynes repair manual for your make/model and year. It has detailed description of how to do this. Even has pictures and diagrams. Also good for all around repairs and maintenance.