i had my mercedes at 3 other shops for a electrical problem including the dealer they all told me it would cost alot to find and correct this issue,i took it to christian at motohaus automotive and they found and repaired the issue within 2 days at a much lower cost than i was originally quoted,they really do know mercedes,i was very impressed about the knowledge these guys have about my vehicle,i would recommend motohaus to anyone,they are a 30 min drive from my home but worth it !!!!!