mhconley

My 2013 C2S Cab has an issue that the emergency flashers (all 4 turn signal lights) begin flashing when I lock the car. The issue is intermittent and I can usually get it to stop by opening and closing the door or locking and unlocking the car repeatedly. It happens when I lock the car with the fob, the button on the door handle or by just walking away. The car has Entry & Drive.

The car has two active/static fault codes:
880909 - Left front door handle proximity sensor circuit open circuit short to battery (+) or ground
C13212 - Communication with alarm siren (Rear 2)

Can these codes cause the issue I am experiencing? My independent service shop recommended replacing the driver's door handle. Will this fix the problem? Should I try the alarm box first? It seems that others who have had this problem fixed it by replacing the alarm module. What should I be looking at to correct this?

Martin

mhconley

I love responding to my own posts...

I bought this car several weeks ago. After I got the car home and looking into he fuse box to find the OBD2 port I noticed there were two fuses missing: B3 Alarm Horn and C9 Alarm Siren. I didn't think anything about it at the time and simply replaced the missing fuses. Now I think they were missing because the previous owner was hiding this issue. Unfortunately my PPI missed the pulled fuses. (They also missed that the horns did not work but that's something else entirely.)

So I pulled the the C9 Alarm Siren fuse and the issue has stopped happening. I also no longer get the chirp when I lock the car. I'm thinking of replacing the alarm siren. It is not that expensive and easy to get at. Do you think I am on the right track?

Martin

VII7

Several reports of alarm module failures, if I remember correctly it's fairly cheap and actually a VW part.

mhconley

I am replacing the Alarm Siren (part number 1K8 951 605 B):


It is a VW / Audi / Porsche part. Tested and working used are readily available on eBay for under $40.

Martin

Jack F

Where is this siren located?

mhconley

Under the cover in the frunk next to the compressor. Very easy to get to.
https://rennlist.com/forums/991/1235...l#post17215387

Martin

garthg

For $40 it's worth a shot. Was this a fix?

asellus

I'd say both those codes are related. The door handle one could be a fluke, but your alarm siren.. yeah, as mentioned above, we've been seeing failures of those pop up now and again. Maybe three this year?

El_Tigre

I'm having a similar issue actually so I may replace the same module and see what happens since its so cheap! For me, if I press the lock button on the fob twice, the hazards will keep flashing forever (seemingly). If I unlock, then lock once, they flash once and the car locks. Not quite the same thing you're having.

sr5959

I had this problem and I believe it was fixed this way, under my Fidelity warranty.

mhconley

Good to know. I thought is was worth $40 to see if it solves my problem. Pulling the fuse has fixed it but no chirping and no alarm. I'm supposed to receive the alarm siren on Friday. I'll post the results after I install it.

Martin

Schorsch

Just out of curiosity: mine does not chirp when I do lock my 991.1
I guess its because of the European specs.

Is there an easy way to program/switch on the chirping when locking my 991?
Thank you!

mhconley

$37.77 and a 5 minute install later and the problem is fixed. No more flashing lights. I re-scanned the car for error codes and both are gone.

The alarm siren replacement fixed another issue. My frunk lid was not popping when I waved my hand over the nose; now it does.

Woo-hoo!

Martin

asellus

Thanks for the update, that's great to hear!

garthg

My favorite kind of post.
Practical information that is likely to be useful to others.