hello, i went today to see a 1999 c43 amg with 150 000 km that i found on the net.
i tried the car and everything seemed perfectly correct. but when i got on the highway, i hit the pedal to the floor and as the car was speeding, i noticed the headlights flashed for a fraction of a sec, ( the car was still speeding and the engine didn't cut at that moment) then i tried the same thing and the headlights did the same thing again and again.
when i parked the car, i tried to open the sunroof witch, while opening, stopped, and i had to release and press again on the button so i continues opening. ( i had to do the same thing about 5 times before the sunroof was completely opened). when i closed it back, i didn't jam as it did while opening. then, i reopened the sunroof but that time it didn't stop or jam.
what could it be?
anyone could help?
thanks.

Not in the middle of the night!..

Sounds like a interior network issue. There are 10 computers on that network.
Any of them could cause those electrical issues.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

i will obviously take it for an inspection at MB befor purchase.But, is it easy to repare? is it costly?

Most likely a door control module or the PSE (central locking module)

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

thanks a lot.

The sunroof sounds like it lacked synchronization, and you accidentally performed the procedure.

what do you mean by lacked synchronization?