Hi, During my vehicle B (minor) service, my dealer has reported me the following problem: Oil leak from Gearbox and found Pilot Bush having failed has caused oil to travel through Gearbox Wiring Harness which has reached the gearbox control unit. To fix the problem the dealer has given me an estimate of GBP 3,000 - 3,500. The dealer mentioned that, there is lot of labor work, which might take up about 14 hours of time. If we are lucky we can recover the gearbox control unit by wiping all the leaked oil from it and drying it up provided if it is still intact. Could you please advise, what all the dealer has mentioned is very much true? My vehicle is under mercedes service care plan and due which I service my vehicle every year from the dealer. Also, I get my vehicle MOTed from the dealer itself. Because of these, since 4 years my vehicle visits the dealer once every 6 months in July time for MOT & January time for Service. In-spite of this, the dealer never reported any leak. The dealer has reported the leak last week 7th Jan when went for B (minor) service. The dealer also mentioned it to be very serious as the leaked oil reached the gearbox control unit. I got little upset with the dealer not to report any minor leak on any occasion of last service (in Jan-2016) or during the last MOT in Jul-2016. Could you please advise, this doesn't come under any service or MOT?