Check: Fuse Turn signal flasher Switch at steering column Bulbs
There are two flashers, one for the hazards and one for the signals.
Flasher is faulty.
check the fuse first!
If your hazards still work, most likely your turn signal relay needs to be replaced.
The 1990 VW Jetta turn signals will not work when the ground wire is broken or corroded. The turn signals may need the lightbulb's replaced.
I replace my flasher fuse.Now they light up but won't blink.
Multifunction switch is bad.
1999 Audi a6 quattro, How I fix the problem when the turn signals don't blink, but hazard lights work well?
Most likely a bad turn signal flasher or blown fuse
have you tryed all the fuses then check if the bulbs are good
If the turn signal bulbs light but will not flash, the flasher relay is defective, replace it.
Could be the flasher unit.