Needs decent diagnostic equipment…So how do I solve that. Is it a part to replace? If so, what part?
You need a diagnostic tool that can read the data signals from the gearbox in real time ..Latest with this saga. I have used a Carista Pro to check for faults and norhing. Not one fault. Proper scratching my head as to why cruise control works i. 1,2,3 and 4th but not 5th or 6th gear.