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Post by shadow87 on Jan 30, 2021 16:19:36 GMT
Please help I have Golf R 2019 MK7.5 the car is not moving only rpm increased when shifting to P or D or S the car still not move?? Please any idea or fix, please check the fault in transmition ibb.co/k1nyJ74 |
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Post by jos990 on Jan 31, 2021 3:36:07 GMT
I think control module fault code is triggered by the main pressure valve fault code which is in the mechatronic unit, there are different solenoids in the mechatronic that controls oil pressure and shifting the clutches in the transmission, guessing it could something wrong with one of the solenoids or something in mechatronic itself that connects to the main pressure valve that is located in the mechatronic.
It could be a less expensive fix with just needing to replace a solenoid or something more expensive like the circuit board that connects to the solenoids/pressure valve
Since your car is not moving when you change from P/R/D it seems that the the main pressure valve is not functioning and as it says has electrical error, did you try to erase the fault codes?
Check in transmission and live data if you can see some value if you select " Current of main pressure valve" under transmission-> live data -> search for main. Or check if you find some other interesting live data options
I had similiar fault in my old golf r mk6 but luckily had warranty and got the whole mechatronic replaced.
I think the new 7 speed gearbox in the golf r 7.5 is called DQ381-7A
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Post by shadow87 on Jan 31, 2021 7:04:59 GMT
Thanks for the reply, regarding the fault i already cleared the fault and it's gone but the issue is still there the car still not moving when chenge from P/R/D/S
only rpm increased without move!
After i turned off the car and start the engine again the 2 faults appear again?
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Post by jos990 on Jan 31, 2021 16:07:56 GMT
Yeah most likely it's an electrical error with the pressure valve as the fault codes describes and since it's a "main pressure valve" it's most likely that the mechatronic does not build up the correct pressure to be able to put the gearbox in any gear as you said, the car does not move at all. When these valves open or close it provides oil to different valves that controls clutches/gears in the gearbox.
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