Any access to an error reader? A fuse doesn't go out because of old age. Maybe there is an error code with some clue (and isn't that the overhead lights don't work). Never seen this type of burn before ona R172 (or R171 for that matter).
Hi Bob!Just had the same issue.
Hazard warning light malfunction was the warning.
Fuse 18 had blown, replacing it just blew again.
All buttons on lower console, airscarf etc were dead, eco stopped working and interior lights stopped working.
Diagnostic port was dead too...
MB repaired under warranty. Exact same board failure.
had noticed a funny smell in the car, so was going to change the pollen filter, smell was charred components.
Hi Tony, service plan but no warranty. It's booked in with Mercedes to be fixed. £468 including labour & VAT.Paul
Do you have a current MB Warranty Policy?
If so I suggest you go back to your Mercedes dealership re Warranty.
Items don’t need to be subject to recall to be covered by Warranty. I know Warranty cover has changed this year but check your Warranty Policy statement. Electrical items used to be fully covered for failure. Be polite but insistent and don’t hesitate to escalate to MB UK HQ in Milton Keynes If the Dealership won’t accept liability.
If you dont then I’m not surprised they won’t cover it, it’s eight years old after all!