For 2003 A3 Second generation Audi recommends to use: WY5W 12V 5W W2.1x9.5d yellow, W5W 12V 5W W2.1x9.5d, W3W 12V 3W W2.1x9.5d, T4W 12V 4W BA9s, P21W 12V 21W BA15s, C5W 12V 5W SV8.5 (11x35), PY21W 12V 21W BAU15s yellow, H21W 12V 21W BAY9s, R10W 12V 10W BA15s, C10W 12V 10W SV8.5-8, W16W 12V 16W W2.1x9.5d, PS19W 12V 19W PG20, H11 12V 55W PGJ19-2, H7 12V 55W PX26d, D1S 85V 35W PK32d-2, H7 12V 55W PX26d Longlife, D2S 85V 35W P32d-2, W5W 12V 5W W2.1x9.5d blue, and W5W 12V 5W W2.1x9.5d Longlife. To select the right part or fluid see the table below.
in your garage to make future searches easy.
Condition
Value
expand_moreFront light sources
expand_moreDaytime running light
expand_moreAll other modifications
With bi-xenon
P21W 12V 21W BA15s
With halogen headlamp
PS19W 12V 19W PG20
expand_moreFog lamps
expand_moreAll other modifications
S-Line model
H11 12V 55W PGJ19-2
All other modifications
H7 12V 55W PX26d
expand_moreFront direction indicator
All other modifications
PY21W 12V 21W BAU15s yellow
expand_moreHigh beam
expand_moreAll other modifications
With bi-xenon
D1S 85V 35W PK32d-2
With halogen headlamp
H7 12V 55W PX26d Longlife
Xenon headlights
H7 12V 55W PX26d Longlife
expand_moreLow beam
expand_moreAll other modifications
With bi-xenon
D1S 85V 35W PK32d-2
With halogen headlamp
H7 12V 55W PX26d Longlife
Xenon headlights
D2S 85V 35W P32d-2
expand_moreParking light
expand_moreAll other modifications
With bi-xenon
W5W 12V 5W W2.1x9.5d blue
With halogen headlamp
W5W 12V 5W W2.1x9.5d Longlife
Xenon headlights
W5W 12V 5W W2.1x9.5d blue
Side direction indicator
WY5W 12V 5W W2.1x9.5d yellow
expand_moreInternal light sources
Boot light
W5W 12V 5W W2.1x9.5d
Door light
W3W 12V 3W W2.1x9.5d
Door safety light
W3W 12V 3W W2.1x9.5d
expand_moreEntry light
All other modifications
W5W 12V 5W W2.1x9.5d
Footwell light
W5W 12V 5W W2.1x9.5d
Glove compartment light
W5W 12V 5W W2.1x9.5d
expand_moreInterior light
Front
C10W 12V 10W SV8.5-8
Rear
C5W 12V 5W SV8.5 (11x35)
Reading light
T4W 12V 4W BA9s
expand_moreRear light sources
Back-up lamp
P21W 12V 21W BA15s
License plate light
C5W 12V 5W SV8.5 (11x35)
Rear direction indicator
PY21W 12V 21W BAU15s yellow
Rear fog lamp
H21W 12V 21W BAY9s
expand_moreStop lamp
All other modifications
W16W 12V 16W W2.1x9.5d
Tail light
R10W 12V 10W BA15s
Servicing your Audi use only recommended parts, oils, fluids and lubricants.
Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 2003 Audi A3 user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.
Before doing any DIY service please check your insurance policy and Audi warranty policy for your region. In some regions DIY service may invalidate your warranty.
DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Audi A3 service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.
Doing basic service for your 2003 Audi A3 you're not only saving money, but also also improving your technical skills and learning something new.
2003 Audi A3 generations
In 2003 Audi offered 2 generations of the A3. Maintenance items may vary in different generations. Be sure that you are looking at the rigt modification.