We have three 311 CDI's ranging from a W plate to an O2, two of them have a habit of dropping into limp mode if being worked 'hard' - by hard I mean carrying about 1 tonne and driving for about 6 hours.
On one of them if you simply switch the engine off and back on the engine reverts to its normal state and works fine, on the other you have to switch off, give it about 30 minutes and then restart and all is OK
Does anyone have any thoughts - in the current climate running them into MB for a diagnostics check is not top of list of things to do
311 CDI Limp Mode 
Linear Mode
