I have a 2001 SL500 with around 75K on it.
I have just had what I presume is a head light relay failure. Park lights work fine but as soon as you turn on the head lights the warning light on the dash lights up and beeps. No low or high beam. I have checked all the fuses-both left and right are fine.
I did change out the head light bulbs recently to 100/80W as the lighting is so crap on them, so this is why I am suspecting the relay.
Also, I cannot identify which relay is for the headlights or I would just go get a replacement and try it. Easy access to relays A thru D.
Any advice would be greatly appreciated.

 

I have a 2003 sl500 with a constant flashing headlamp and interior dome lights when the light are turned on. What can cause this ?