Tony Lewis

Just had a gearbox lockup kit put in and remapped. Prior to this I had arb seperate the 2 start batteries one for starting and one to run my fridge in the back. After the lock up kit was installed the warning lights for ABS, Traction control and information lights came on the dash and won’t go off. the car will not select low 4 wheel drive either. The mechanic who fitted this was stumped on what has gone wrong. Please advise thank you