stephenmarr

Hi guy newish to the forum.

Ive a 2002 Allroad 2.5TDi

over the last week or 2 when i leave the car for a few days the rear sags evenly on both sides.

usually leave it on level 2 when parked up.

i have it set on level 4 with jack mode enabled tonight.

Is there anything else to check?

snagitseven

It sounds like you either have a pair of air springs that are leaking (usually it's only one corner) or a bad control block. Could also be a leaking air line. There are many threads on the air suspension system. Do a search.

amiram

Still with the original rear air springs? Usually the air leaks is detected in the airbag Maybe first look for air pressure leaks from air pressure connections on the valve block and on the rear air springs ( 3 connectors on each unit )

stephenmarr

Well checked it overnight at level 3 with jack mode enabled didnt sag.

going to leave it overnight at level 2 with jack mode enabled.

will update.

stephenmarr

Hey all bit of an update.
I left it for 2 nights on level 2 with Jack mode enabled and both sides have sagged.
Will leave it in level 3 over next few nights and see what happens.
Why would both sides drop on jack mode?

MrKid

Jack mode does not "lock" the shocks in place. That just over rides the computer from trying to level car while it is on a lift or being jacked up.
The air shocks usually leak at level 2, because that's where the car spends most of it's time. They leak at the spot where the bladder folds on the shock. When you go higher or lower, you "seal" the leak.
I have good set of used shocks, because I swapped to coil overs. If your interest, I can pm you a price.

snagitseven

Reminder, no offers to sell or buy in the discussion forums. Use PM or the classifieds.