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 Volvo S70 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS
| Component | Component Location |
|---|---|
| ABS Control Module | On left rear of engine compartment. See Figure . |
| Blower Fan Power Unit | On right side of HVAC housing. |
| Central Locking/Alarm Remote Control Unit | Behind upper left side of dash. |
| Central Locking/Anti-Theft Alarm Control Module | Behind lower left end of dash. |
| Cruise Control Module | On central electrical unit, position Nos. 101 & 102. See Figure . |
| Dolby Module | Behind center of dash. |
| Electronic Start Inhibitor | Behind left side of dash. |
| Engine Control Module | On right front inner fender panel, in control module box. See Figure . |
| Ignition Discharge Module (IDM) & Ignition Coil | On left side of engine compartment, on front of strut tower. See Figure . |
| Power Sun Roof Control Module | Next to sun roof motor. |
| RTI Control Module | Behind center of dash. |
| Seat Control Modules (2) | Under driver's & passenger's seat. |
| Transmission Control Module | On right front inner fender panel, in control module box. See Figure . |
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.