Hi All. I have a 02 Disco td5 auto. Runs well but box doesn't "lockout" till about 2750 rpm. Once its locked out it will hold it quite happily down to about 1800rpm and pull very happily. Is this normal! I have heard that if I swap the control unit from a V8 disco it will change up at lower revs. Anyone had any experience of that. Also since cold weather 2 warning lights coming on sometimes . M and S. Go off if I stop engine and restart. Any thoughts? Thanks

Hello and welcome to LZ