Welcome to the real world of problems.... As with the E54, I had numerous error messages for electonic suspension innactive etc.... Once the dealer change everything but luckilly I was under warranty (45.000KMS)! Next time it started around 70K, I decided to seel the car and order an E70, with sport suspension and NO ELECTRONIC SUPENSION etc... It drives absolutely fantastic ( no body roll) and I know I will be out of huge bills when warranty will expire....