| You need to know what fault codes the sensors are throwing up, which then cause the limp home mode to kick in. Try taking it to a MINI specialist with full diagnostics equipment. ThinkMINI have a trained diagnostics ex BMW tech (worcestershire), ModnMINI (kent, maidstone?) have ex BMW techs ... theres also 1320 etc ... they can have a look at the fault codes and see what the ECu thinks is wrong.... BMW may be right but I doubt you really need a full loom.... theres probably an issue and part could be fitted in (BMW wont do this as they deal with stock parts and the loom as a whole part so thats what they fit, even to repair a 2cm section of wire often!) | 
