I was led to believe this is a common fault/bad luck so change the whole instument panel with one from a scrapyard. Removing the panel through the steering wheel as described in Haynes manual worked easily with the 340 steering wheels but not sure if this works with the fatter GLE steering wheel
sure its not just the cable? pull it off, get someone to spin the left front wheel and look at the inside of the cable for turning. if both go together i'd suggest the cable..
Does it still show the speed though? Mine stopped recording the distance travelled just before the Nessy meet. It still shows the speed though, and I know of a few locking up. My previous one locked up for about 4 miles, then sorted itself! However this one looks terminal, one day I'll get round to it, but speedo mods are afoot for me too.
Pete
G reg 360 GLT, G reg 340 GL Variomatic, plus many more..........