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.
2000 Audi S4 AutomaticFACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Miscellaneous
MISCELLANEOUS
| Component | Component Location |
|---|---|
| Alarm Horn | In rear of luggage compartment, behind trim. |
| Coolant Fan Control (FC) Series Resistance | On bottom of left front frame rail, in engine compartment. |
| Data Link Connector (DLC) | Under left side of dash. |
| Front Seat Belt Tensioner Ignitor (Left) | At bottom of left "B" pillar, behind trim panel. |
| Front Seat Belt Tensioner Ignitor (Right) | At bottom of right "B" pillar, behind trim panel. |
| Head-Level Air Bag Ignitor (Left) | On left "C" pillar, behind trim panel. |
| Head-Level Air Bag Ignitor (Right) | On right "C" pillar, behind trim panel. |
| Ignition Coil (4) (1.8L) | On top of cylinder head, beneath decorative cover. |
| Ignition Coil (6) (2.7L) | On top of respective cylinder head, beneath decorative cover. |
| Ignition Coil (2.8L) | On top front of engine. See Figure. |
| Left Connector Station | Under bottom of left "A" pillar trim. See Figure. |
| Power Output Stage (1.8L) | On top of air cleaner housing. See Figure. |
| Power Output Stage (2.7L) | On top of air cleaner housing. See Figure. |
| Power Output Stage (2.8L) | Integral with ignition coil. |
| Power Output Stage 2 (2.7L) | On top of air cleaner housing, with brown connectors. See Figure. |
| Rear Seat Belt Tensioner Ignitor (Center) | Behind center rear seat back. |
| Rear Seat Belt Tensioner Ignitor (Left) | Behind left rear seat back, behind trim panel. |
| Rear Seat Belt Tensioner Ignitor (Right) | Behind right rear seat back, behind trim panel. |
| Right Connector Station | Under bottom of right "A" pillar trim. See Figure. |
Factory Service Tools
Use the Manual With the Right Hardware
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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.