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.
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.