Mercedes R Klasse Turn Signal Problem

I had something similar on my R Klasse By signal lamp do you mean the turn signal Those bulbs are monitored by the car's computer An electrical fault can trigger the error message you describe Did you try a simple bulb replacement first Sometimes it's just that easy

Yes, by signal lamp I mean the turn signal I have not tried a bulb replacement I thought the error message pointed to a more significant electrical fault Can a bulb replacement fix an issue where the error memory indicates a fault

It is worth a shot The monitoring system on these cars is sensitive Even a slightly degraded bulb can throw an error Since you suspect an electrical fault, it might be wise to have a workshop check it out if a lamp replacement doesn't fix it Better safe than sorry with electrical problems

I followed your suggestion and replaced the bulb It resolved the error message and the fault indication The turn signal is working now Thanks for guiding me to the bulb replacement and saving me the diagnosis cost at the workshop