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 MANUALSVOLVO2009S80 AWD V8-4.4L VIN 85 B8444SREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULESERVICE AND REPAIRENGINE CONTROL MODULE (ECM), REPLACING
2009 Volvo S80 AWD V8-4.4L VIN 85 B8444S
Engine Control Module (ECM), Replacing
2009 Volvo S80 AWD V8-4.4L VIN 85 B8444SSECTION Engine Control Module (ECM), Replacing
Engine control module (ECM), replacing
Note! The illustrations in this service information are used for different model years and/or models. Some variation may occur. However, the essential information in the illustrations is always correct.
Removal
Preparatory work
Ignition off.
Disconnect the battery negative cable. See: Battery, disconnecting Battery Disconnecting.
Removing the Engine Control Module (ECM)
Remove the cover by lifting it straight up.
Remove:
- the connectors, x2
- the bolts, x4
- the Engine Control Module (ECM).
Installation
Installing the Engine Control Module (ECM)
Note! Ensure that the rubber seal is positioned correctly in its groove.
Install:
- the Engine Control Module (ECM)
- the bolts, x4
- the connectors, x2
- the cover
- the battery's negative cable in accordance with: Battery, disconnecting Battery Disconnecting.
Ordering software
Order applicable software. Programming and Relearning
Finishing
Check that no diagnostic trouble codes (DTC) have been stored in the control module during the repair.
Test drive the vehicle and check the function of the engine.
RENDER: 1.0x
NO RELATED
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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.