SwedeSpeed - Volvo Performance Forum banner

sum problem

1136 Views 5 Replies 5 Participants Last post by  mgotts
After replacing the eilbach with the original springs I wanted to have my sum updated and the headlights recalibrated. The dealer told me he could not get contact with the sum unit. This was allready the case in the previous situation with the eilbach springs, but nothing has changed. The dealer suggested to replace the whel sum unit, They could not give me a price for the replacement nor the guarantee that this would solve the problem.

Anyhow I am not so happy with this. Any ideas or suggestions?
See less See more
1 - 1 of 6 Posts
Re: sum problem (RdriveR)

Sometimes lowering springs causes the system to not interact with the SUM.
Have the dealer jack up the rear end about an inch or two and try to communicate again with the rear jacked slightly up
This seems to cure the problem most of the time if everything else is OK
1 - 1 of 6 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.