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08 XC90 AWD Disabled

Help, Advice, Owners' Discussion and DIY Tutorials on Volvo XC90s. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America).
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Joined: Thu Nov 14, 2019 11:51 am
Year and Model: 2008 XC90
Location: New Hampshire

08 XC90 AWD Disabled

Post by MattGXC9D »

Hi all! I'm new to the group and was hoping to get some feedback on my AWD system Disabled issue.. I have tried changing the fluid and Haldex filter in hopes that it may clear out but no luck.. I tried putting a scanner to the truck but showed no Codes at all.. fuse is ok. This issue started a few months ago and at first would be intermittent and is now constantly disabled. Any ideas at all?? 200k miles on it. This has been a great vehicle and would love to get this issue resolved being winter and all... Thanks in advance!!!
Last edited by matthew1 on Thu Nov 14, 2019 12:13 pm, edited 1 time in total.
Reason: Edited title. Please, no "HELP"s in titles.
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Re: 08 XC90 AWD Disabled

Post by RickHaleParker »

MattGXC9D wrote: Thu Nov 14, 2019 11:58 am I tried putting a scanner to the truck but showed no Codes at all.. fuse is ok.
Not all scanners can get the Differential Electronic Module (DEM) codes, what scanner did you use? Vida-DiCE recommended.

You can try cleaning the connectors on the Differential Electronic Module.
( Under Truck at the end of the driveshaft, rear axle ).
Check the DEM harness for shorts and opens.
1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD.
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
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