How do i replace the sidelight bulbs on my 1999 audi a4? do i need to take the whole headlight unit off or is there a simpler way? I can get to the wires that conect to the sidelight bulb but my fingers are neither thinenough or long enough to get to the bulb

Sidelight may mean the turn signal on the side of the car (sidemarker) or the turn signal right next to the headlights.

To replace sidemarker, you need slide it toward the front of the car. You may need to use a little bit of force. Then, pry the bulb out of the fencer hole with your fingers.

For turn signal light next to the headlights, see if you can figure out how to do it from the You tube video:
how to change the side light of audi a4 1996 Bing Videos

Most likely this is not a fuse if it is just one headlight. Replace the headlight bulb and that should resolve the issue. If you have already done that start checking the wires for shorts or breaks and test the light switch itself.

Sounds odd to me. I have never heard of a 'light bucket'. Perhaps you're referring to the complete headlight casing. The whole unit should not need to be replaced unless it it broken and allowing rain to enter. If the housing is not cracked the headlight bulb is the first thing to suspect.

You can find a new bulb for about $20.

you have to loosen the whole headlight assembly to open the covers behind the lights to actually get to the bulbs. 4 screws, 2 are on the top of the assembly(phillips screws) the other two are hex and attach the bottom of the assembly to the car. somewhat difficult to see but look behind the assembly and down into the compartment and loosen the screws(they don't fully come out) just enough to pull the assembly out. open the black cover behind he low bean and there is the bulb

Hi, are you sure it's the headlights and not the sidelights? If it is the sidelights, check to see that it has the correct stop/tail light bulbs fitted in the rear. If the bulbs have a single instead of twin end connection it will short across to the sidelight circuit when the brake lights are illuminated. If you're not sure just temporarily remove the stop light bulbs or disconnect the multiplugs on the rear lamps and check to see if the fault is still there.
Hope that helps Matt...

remove the bulb thats out, check the socket it's in for burnt contacts as this is common. if the contacts are burnt check the metal contacts on the tail light assembly, if they are burnt you will have to replace the whole assembly. if they are ok replace the bulb and socket

You need to take the headlight unit out if its on the left hand side (due to power steering reservoir, if on the right hand side you can just about get to the cover to remove it...
If you need to remove the head lights .. it simple... 4 torque screws on the top.. undo and slide towards youself.... (place on something soft and remove the plastic cover and change bulb.. reinstall and tighten )

NO FUSES ON MY AUDI A4 2002 FOR HEADLIGHTS ETC. LOOKED UP MY HAYNES WORKSHOP MANUAL (WIRING DIAGRAMS) WORKS WITH THE POWER SUPPLY CONTROL UNIT, THERE IS ONLY ONE FUSE ON THE DIAGRAM FOR HEADLIGHTS ,SIDE, TAIL AND THATS FOR THE WHOLE ELECTRICAL SYSTEM 150AMPS RIGHT NEXT TO BATTERY.............. HOPE I HAVE BEEN OF SOME HELP TO YOU..

AUDI A4- 2005. There is a technical service bulletin for this exact problem. take it to the dealer when this issue has happened while driving. During a daytime drive when cold see if you cant get the light to fail while circling your dealer. As soon as you pull into the service drive do not turn the car off do not flip the switch. I am an Audi Technician for a dealer in Birmingham alabama. Personally this is not my favorite repair to perform; What audi states is that if the bulb flickers the bulb should be replaced; if one side fails the bulb should be swapped left to right if the fault continues with the bulb the bulb is at fault; if the bulb is swapped and the bulb fails again on the same side it is the module. NOW: I currently am working on a 05 A4 that both bulbs both modules have been replaced and Audi has no clue what to advise on a repair. THIS IS AN ISSUE if it has happened to you ask if there is a TSB for this issue or try to find it for yourself.