Did a journey of approximately 100 miles yesterday. On three occasions (at roughly same distance between incidents) heard a low level metallic clunk (presuming from the gearbox) which sounded like it may be a valve or the likes "closing". The gearbox then locked in a gear and would not change gear. At the same time the messages "Gearbox Fault, ABS Fault, DSC not available and Cruise Control Not Available, all appeared together.
Each time I stopped the car, turned ignition off and re-started car. The messages were still showing but cleared when the car was driven away. This same procedure was carried out three times during the round trip of approximately 100 miles.
Have this morning used a code reader and there are no codes recorded other than the manufacturer control code.
Gearbox service (Oil and Filter ) was undertaken on 24.04.2021 @ 61049 miles. Current mileage is now 67904 miles.
Questions:
a/ Are these incidents connected in any possible way
b/ Is it at all possible that the gearbox transmission Fluid could have become low and how would one check that. (I ask that question because oddly enough, I seem to recall that on at least two of the three occasions I had turned 90 degrees right at traffic lights. Wonder if the fluid was caused to slop around in the gearbox, thus causing the message to appear?
Any advice, explanation or suggestions on fixing fault would be very appreciated.
Best Wishes and Regards, John