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.
1999 Audi A8 BaseFACTORY OEM SERVICE PROCEDURE
Fuse Identification (Plenum E-Box)
FUSE IDENTIFICATION (PLENUM E-BOX RELAY & FUSE PANEL)
| Position No. | Fuse No. | Amp Rating | Circuit Protected |
|---|---|---|---|
| 2b | S113 | 15 | Transmission Control Module |
| 6 | S117 | 15 | EVAP Canister Purge Regulator Valve, Intake Change Over Valve, Fuel Injector Air Control Valve & EVAP Leak Detection Pump |
| 7 | S116 | 15 | ECM & Fuel Injectors |
| 9 | S115 | 20 | ECM & Ignition Coil Terminal No. 15 |
Factory Service Tools
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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.
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