Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI1999A4 BASE, 1.8 B, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEDOOR LOCKSANTI-THEFT & POWER DOOR LOCK SYSTEMSPROGRAMMINGCODING REMOTE CONTROL TRANSMITTERS
1999 Audi A4 Base, 1.8 B, Automatic
Coding Remote Control Transmitters
1999 Audi A4 Base, 1.8 B, AutomaticSECTION Coding Remote Control Transmitters
NOTE:
Every new non-encoded remote control unit MUST BE re-coded for the central locking control module. Two separate keys are needed to perform this procedure. Up to 4 separate remote control transmitters can be programmed, but ignition must be turned off between each coding procedure. If only one remote control unit is replaced, ALL transmitters must be reprogrammed.
- Turn ignition on. Use scan tool to read measuring block value 003 to see how many transmitters are coded to module. See FUNCTION MODE 08: READING MEASURED VALUE BLOCK . READ MEASURING VALUE BLOCK 3 0 0001 0 0000 will be displayed. Second display field (0001) indicates that one transmitter is programmed to vehicle.
- Lock vehicle from outside using second key. Press unlock button on transmitter 2 times (3 times for third transmitter, 4 times for fourth transmitter) within 5 seconds of locking vehicle. Turn signals will flash to indicate module received signal from transmitter. Wait 5 seconds after turn signals flash.
- Press unlock button on transmitter one more time. Turn ignition off and remove key from ignition switch. Operate remote control transmitter. Scan tool second display field should now display (0011) indicating that 2 transmitters are programmed to vehicle.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.