pbcsd

So out of the blue a week or so ago my keyless entry to my 2011 S4 stopped working. It's not the battery (won't work on either FOB).

Can use the key to unlock door and trunk by pressing the appropriate buttons, but won't automatically sense the key fob is near and open the doors.

Is there a Fuse for this I'm hoping that I can replace?

pbcsd

Ran ODBEleven.

03285 error on door sensor. Assume they need to be replaced?

AForePlayin'03

Is that the complete error? Or is there more to it which might give you a hint as to which sensor might be bad, like left or right, etc. Not sure if you googled the error, but I found this that might be helpful.

https://www.a5oc.com/threads/advance...problem.21211/

lmariorod

Don't automatically start blaming sensors and replacing them. Make certain your car battery is up to snuff. Yes, door key sensors are the first to shut down when battery is weak. Yes, you can start the car because the power management reserves all power to start the car but slowly shuts down other minor accessories. Worth charging/changing the battery before replacing sensors.

https://www.audiworld.com/forums/aud...anded-2971566/

pbcsd

Thanks guys. Anyway I can check the battery without going to dealer? Can't recall but I could swear I just replaced it a year or two ago.

pbcsd

Checked with my dealer, replaced my battery April 2017 at 113k km, have 150k km now so shouldn't be the issue. Will recheck my ODB error code when I get home as I don't think it saves the last error code in the app without running it again.

pbcsd

Pretty sure I just replaced them both in last few months but you're right.. Doesn't hurt to try!

pbcsd

Definitely not the battery.

pbcsd

Dealer confirmed its the driver side door at fault. Wanted $500 to replace it... 500??

Ordered the part off amazon for $30...will try to replace it myself.

pbcsd

Replaced the door sensor today in about 15 minutes. Saved myself about cad$460.

Used this video, in German but figured it out.