I noticed that the rear left of the car was sagging when i came out in the morning (no error messages) i assumed that i had a bag leak so decided to change both rear airbags, the next morning still sagging down on the left hand side, still no error message. when i unlock the car the compressor starts up and the car is fine whilst driving, it only starts to sagging when it goes into sleep mode. I have check the fuse's (all ok) cant find any air leaks anywhere. i had it checked out on a GT1 system and all come back fine. I don't what to do next hopefully someone will be able to help
