[serge73]

randomly when somebody sites on the passenger seat, the red airbag light turns on and remains on. I had the shop read the codes today and 93C3 popped (seat occupancy detector). Anybody know what this is and if the fix is a DIY?, shop didnt tell me a lot other than check with BMW if this was a recall as the sensor might be faulty.....

[serge73]

anybody help please?, ive searched the forum for this code and found nothing... help much appreciated

[serge73]

Seems nobody has had this issue in the past?, I checked with my local independent shop and they said this was a safety issue (obviously) but recommended I go to the dealership for this type of work. I am afraid to step in there and get a HIGH invoice for some monster safety repair..... any other ideas out there?, or suggestions of where I can get some advice?

[gmfm]

I just got this code (93C3) starting last week. I cleared it and it came back as soon as I had a front passenger again. I have a service appointment scheduled for tomorrow (I have CPO warranty) and I'll post back here with the amount they bill to warranty if I can remember to catch a glimpse of the warranty invoice.

[TGIM]

I had that on my 330i 2006 ... At first it wasn't going to be covered by my warranty till it became a recall. They have to replace the seat cushion.

[gmfm]

I got my car back today and I did take a quick look at the warranty invoice. If I remember correctly they billed ~$390 parts and ~$200 labor for the seat repair. Here are the comments on my invoice:

CUSTOMER REPORTS AIR BAG LIGHT ERROR ONLY WHEN PASSENGER IS IN SEAT
CAUSE: Defective right front seat mat sensor.
PERFORMED SEAT SENSOR REPLACEMENT
25 52-10-1-945-543 CLAMP
1 52-10-7-244-128 SPORTS SEAT UPHOLSTERY

Defective right front seat mat sensor. 
Checked fault memory and perform test plan for the seat mat detector.
Found the right front seat mat detector was not reading properly and was prompted to replace the right front seat mat sensor. 
DIAGCODE D6577 MRS0000 57 010.
Replaced the right front seat mat sensor and enabled via programming. 
DIAGCODE: D6577 MRS00000 90 211. 
Reprogrammed/encoded the complete vehicle + CAS. 
Test drove vehicle, all checks ok.

[gmfm]

Funny thing too... Since they recoded the entire vehicle I lost all my coded options, including my MoBridge iPod adapter (CDC). I spent about 2 hours in the car tonight re-learning NCS.

[serge73]

yep, mine ended up being the mat sensor. but it seems that in my year/month production this was not a BMW recall so it was not covered (out of 4 year/50K warranty too).... the service agent said she worked with me and that they would split the bill 3 ways (bmw, dealership, myself), so my out of pocket ended up being $250. More than I wanted but less than what it could have been, i guess.....

[Sam335ix]

It happened to me but it went away on its own.

[JustinGTP]

Originally Posted by Sam335ix

It happened to me but it went away on its own.

They are sometimes an intermittent thing and it will likely come back. Have the dealer address it if you're under warranty or else it's expensive out of warranty. My previous MINI had the issue and it was 1100 to fix (Canadian price though).

The seat mats are defective in MINI Coopers, 3 series and 5 series also.

[serge73]

true, mine was intermittent for a few months so I kept ignoring it until it started happening almost everytime somebody sat in the passenger seat. Finally had it looked at and as described above, Mat sensor replacement.

[JHZR2]

Just happened on my 135i (e88) - 93C3 error. Haven't had a front seat passenger in nearly two years now, since we had a child that requires an infant seat. Just a bigger kid in back seat. Front passenger seat just gets tilted for entry/exit.

Literally drove for an errand and it was fine going to the location, when starting up to go home this popped up. Out of nowhere.

Very frustrating.