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 MANUALSVOLVO2004V70 L5-2.4L VIN 64 B5244S6REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULETESTING AND INSPECTIONPROGRAMMING AND RELEARNINGDOWNLOADING SOFTWARE AND REPLACING THE CONTROL MODULEREAR ELECTRONIC MODULE (REM)
2004 Volvo V70 L5-2.4L VIN 64 B5244S6
Rear Electronic Module (REM)
2004 Volvo V70 L5-2.4L VIN 64 B5244S6SECTION Rear Electronic Module (REM)
Downloading software and replacing the control module
New software can be downloaded into the rear electronic module (REM). When ordering software, the hardware and the software in the car is compared to the information in the Volvo central database. If the comparison is OK the software is downloaded to the control module.
If the comparison between the car and Volvo central database is not OK, the database is updated with the car configuration. When this is complete the software is downloaded.
For further information regarding downloading, see Design and Function, Downloading Software.
The control module is mounted in a relay box behind the left-hand cargo compartment panel. To replace the rear electronic module (REM), remove it from the relay box.
For cars with Bi-Xenon lamps, the position sensor for headlamp range adjustment must be calibrated when the control module is replaced. This is carried out in VIDA via the vehicle communication socket.
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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.