Audi A3 Quiz
Body Electrical Equipment

Replacing the Illuminated Key Battery/Bulb

In this manual: Body Electrical Equipment
Owner's Manual — 42Routine Care and Maintenance — 32Engine — 22Engine Cooling System — 9Ventilation, Heating and Air Conditioning Systems — 11Fuel System — 9Fuel Injection System — 4Diesel engine injection system — 5Exhaust System — 9Electronic Ignition and Fuel Injection Control System — 6Charging and Starting Systems — 12Manual transmission — 12Clutch and Drive Shafts — 6Brake System — 13Front Suspension — 5Rear Suspension — 6Steering — 7Body — 70Body Electrical Equipment — 37Wiring Diagrams — 35
~1min read

REMOVAL

CAUTION

When removing the battery, check whether the polarity is marked on the battery. If polarity is not marked, mark the battery position.

PROCEDURE

1. Insert a coin into the slot on the side of the handle (arrow 2 in the illustration).

2. Turn the coin to remove the upper section of the key handle.

CAUTION

Take care not to let the button spring (arrow 1) fall out when removing the upper section.

3. Replace the battery or bulb.

4. Press the key housing cover into place and secure it. Make sure the button is not pinched.

Test yourself

A quick Audi A3 quiz: every answer comes with an explanation and a link to the manual page.