We had exactly the same issue occur on a new plus 4 on the M3W Grindelwald trip last year.
Driver stopped to put the hood up.
Went to restart car and it was completely dead - nothing would work except the clock was doing odd things...
After 20 mins of checking stuff such a fuses etc, a certain ex MMC employee (!) managed to retrace his steps and find us - he called one of the factory tech guys (it was a factory press car and it was on a Saturday) and they basically told us to disconnect the battery, wait 15 mins and reconnect.
We did just that.
Hey presto - worked perfectly....
Last edited by Stevo666; 14/08/23 07:44 PM.
