I've had a similar issue. For me, I need to have the turn signal stalk replaced. If your cruise control starts acting up than that's prob the issue. GL.
My mirror turn signal suddenly started strobing instead of blinking. It has been working fine, but I do have the following code and noticed the same code a few weeks ago when I had last done a scan:
Address 42: Door Elect, Driver (J386) Labels: 3C0-959-70X-GEN4.clb
Part No SW: 3C0 959 701 B HW: 3C0 959 793
Component: TUER-SG FT 002 0307
Revision: 13101005 Serial number: 0000596162
Shop #: WSC 01383 790 50316
ASAM Dataset: EV_DCU42BroseDriveSide A03004
Subsystem 1 - Part No SW: 1K0 959 703 AH HW: 1K0 959 795 T Labels: 3C0-959-70X-GEN4.CLB
Component: J388__TSG-HL 006 1401
Serial number: 00000004738489
1 Fault Found:
67589 - Turn Signal in Exterior Mirror
B11FD 01  - Electrical Failure
Confirmed - Tested Since Memory Clear
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 254
Reset counter: 137
Mileage: 43054 km
It sounds like the LED board may be failing. All 3 still light up, and everyone once in a while, they blink fine, but 99% of the time now they just strobe 2-3 times per blink. Anyone else have any experience with this?
Before you replace why not to do a Outpuut Test to eliminate good parts and focus on the faulty.
Activate needle illumination in ALL MICRONAS cluster since 2004 up to 2010. Activate STAGING for all NEC cluster since 2008 even if not availabe in adaptation chanel.