We just had the CEM along with 16 relays replaced in our 2004 XC90 T6. Now mysteriously the rear passenger window can be put down with the driver control switch, but will not go back up. It must be put up with the back passenger window switch. Could it be related to the replacement of the CEM or relays, or just a faulty switch in the drivers side door panel? I'm sure it would be helpful if you knew what relays that were replaced, all I can say is that they were in/near the CEM, drivers side foot kick guard I'm guessing its referred to. Thanks for any thoughts!

 

recommend replacing the window control module..

 

i would test the driver switch. someone with a little knowledge should be able to swap it with one of the other switches to see if it is the problem or test it with a multimeter.