Date registered: May 2011
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a class auto gearbox missing 6 & 7 gears help?
I have a class w169 auto 7g 2006. just had a gearbox ecu repair as it had a faulty rpm sensor. Now the ecu has been re-installed to car the auto box does not go into 6th and 7th gear.
It shows 6 & 7 on the dashboard display in manual mode but is not physically going into the 6th & 7th gears, all other gears are fine although they used to change down at 2000rpm they now change at 3000rpm. I have a couple of fault codes showing 0730 "A gear rotation on continuable variable is not permissible and in the engine ecu it shows"fault stored in y3/9nz cut control unit"