guys, need your advisemy udm gearbox today decided not to engage to reverse. i tried restart the car also couldnt work. there is a beep when i engage R so i assume the ECU know the gear at R but it just didnt engage.i called up my mech he said start the car engange D drive for 15 mins and see whether can engage R or not.after i did wat i have been told, it actually work. he said it some clutch issue.. i just wana get 2nd opinion on what actually happen and how much is the cost to fix it.my car is m43b19 odo reaching 320k