Question about 2001 Volvo V70
Hi. Check fuse 38 in the fuse box to the right of the dashboard. It is for the siren. There is a serial communication between the UEM and siren which if communication stops there it will stop power supply to sunroof module. Matt
Posted on Oct 08, 2008
Most likely the alarm siren module has failed. The alarm module is wired in series with the sunroof module. If the alarm siren fails (and it does) it will take the sunroof module offline with it.
What I would do is to unplug the module and cycle the key. If it is the siren module the sunroof will work. If it still doesn't work then it could be a wiring problem and would need to be taken to a trusted shop for repairs.
Here is a link to a website that will show detailed instructions on how to remove the alarm module.
After the module is disconnected you may need to reinitilize the UEM. Get in the car and shut the door.
For most you can turn the key on and off, then lock and unlock the car with the remote.
For others just lock and unlock the car three times.
I hope this helps.
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Posted on Jan 02, 2017
Tips for a great answer:
May 06, 2015 | 2000 Volvo S80
this warning light or any other stays on in the dash it is indicating
that the systems control module (or the system sensor in the case of
lights like low oil pressure, door open indicators etc.) has detected
a fault, it then disables the system (this applies to ABS,TCS, TCM,
SRS and BCM faults and others) as long as the light is on. You must
now have the dealer hook up a special electronic diagnostic tool and
"scan" the system for the fault code that is stored for the
Legend of Abbreviations. ABS Antilock brake system.TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module
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