Lights light, just don't blink. I think it's the regulator (?).
Turn signal not working. Works intermitently. on 1995 Mercedes-Benz E320
Sounds like the flasher unit has failed. Its in the engine compartment driver's rear fuse box its the largest relay in the center row.
2 more answers
You'll need to replace the "combination relay" relay:"H" which is inside the relay box beyond the fuse box. The cover is screwed in. The relay costs about $70.00 at AutohausAZ or autoparts warehouse. I found a whole set of relays in that box for 49 bucks on Ebay.
is the blinker relay look for that.