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Sunroof Won't Open After Battery Was Disconnected??

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brandonbeach14
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Volvo Repair Database Sunroof Won't Open After Battery Was Disconnected??

Post by brandonbeach14 » Thu May 12, 2011 9:19 am

My electric sunroof won't open after I had to disconnect the battery cables in the engine bay to get to the O2 Sensor connection below. It was disconnected for about 45 minutes. I have already pulled the fuses and the other int. accessory fuses, but they look good. I went ahead and changed the fuse just incase and still nothing. Is there an iternal fuse in the motor? Or possibly the car has to run through a few drive cycles before everyting comes back online ? Any other ideas:?:
Thanks
Last edited by brandonbeach14 on Fri May 13, 2011 10:02 am, edited 1 time in total.

brandonbeach14
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Re: Sunroof Won't Open After Battery Was Disconnected??

Post by brandonbeach14 » Thu May 12, 2011 2:31 pm

Update----I found a recalibration process for the sunroof if the battery has been disconnected, but it didn't work. The sunroof is still stuck shut. Everything else on the car is working fine. I guess I'll just give it time and see if it starts to operate eventually.

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Re: Sunroof Won't Open After Battery Was Disconnected??

Post by JRL » Thu May 12, 2011 7:40 pm

Did you lock and unlock the car three times with the key?
(NOT the remote)
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brandonbeach14
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Re: Sunroof Won't Open After Battery Was Disconnected??

Post by brandonbeach14 » Fri May 13, 2011 10:01 am

I didn't. Should I disconnect the battery again and then do it?

VCA
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Re: Sunroof Won't Open After Battery Was Disconnected??

Post by VCA » Fri May 13, 2011 10:13 am

brandonbeach14 wrote:I didn't. Should I disconnect the battery again and then do it?
Yes, try JRL's tip first. If that doesn't work, I'm going to bet that you didn't reconnect the battery with the key in position II? If not, pull the battery cables, touch them together, place the ignition in position II, reconnect the positive cable last, then do not enter the car until the SRS light goes out (or until 2 minutes has elapsed with it on, whichever is first)--this lets the computers initialize and startup properly on the P2 cars.
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Re: Sunroof Won't Open After Battery Was Disconnected??

Post by brandonbeach14 » Fri May 13, 2011 11:55 am

No, I didn't have the Key in position II. I'll try JRL's 1st and then yours if needed and let you know. Thanks again.

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Re: Sunroof Won't Open After Battery Was Disconnected??

Post by beetlebob » Fri May 13, 2011 12:50 pm

This happens to me every time I do a battery. SO I will tell you all how to get it to work.
Roll down drivers window and close door
lock car and wait 1 Minute.(this will set the alarm system even if siren is bad)
Reach in through open window and open door(will set off alarm)
Use key in door to shut off alarm
Sunroof works.
Have been doing this for seveeral years and works every time.

brandonbeach14
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Re: Sunroof Won't Open After Battery Was Disconnected??

Post by brandonbeach14 » Fri May 13, 2011 1:11 pm

DIsconnect the battery again and then do the above? Or do it w/o disconnecting the battery? Thanks

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Sunroof Won't Open After Battery Was Disconnected??

Post by VCA » Fri May 13, 2011 4:17 pm

Try beetlebob's procedure before disconnecting the battery; no harm in seeing if it works. If not, then go through the whole disconnect, key in II, reconnect process.
2008 S80 T6 AWD
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brandonbeach14
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Re: Sunroof Won't Open After Battery Was Disconnected Saga??

Post by brandonbeach14 » Fri May 13, 2011 4:36 pm

Well, I have tried every suggestion above with no results as well as the calibration process in the Haynes Manual. How long should I leave the battery disconnected? I only left disconnected for a couple of minutes before trying each above. I also don't have a remote for the car, but I'm not sure if that would be an issue or not. Thanks again.

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