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keydiver
Posts: 1080
Joined: Mon Sep 05, 2011 1:04 pm
Delivery Date: 08 Dec 2011
Leaf Number: 16484
Location: Hobe Sound, Florida
Contact: Website

B1018 Code - Passenger Seat sensor

Mon Oct 02, 2017 10:16 am

Has anyone else had a problem with the occupancy sensor in their passenger seat going bad? I had the dealer quote me $2000 to replace the COMPLETE SEAT! :shock: When this happened in my Prius, this was simply a matter of recalibrating the sensor, but evidently the way Nissan does it you have to replace the whole seat, which includes the sensor. As it is, the passenger airbag is not functional, so why is this not a safety recall issue?? Upon Googling, this seems to be a common Nissan/Infiniti issue. They issued a recall for some 2007-2009 models, but that is all I could find. I thought the manufacture was liable for airbag issues?
FYI: for anyone else that may get this code, and you don't want to pay $2000 to a dealer, you really only have 2 choices as far as I know:
1) Get a used seat from a junkyard, or
2) As I did, buy a bypass kit that replaces the seat sensor. I found a Youtube video where the mechanic explained how he resolved the issue, and how he found a company in Ireland that makes a little box that plugs into the harness under the seat. It puts out the correct timing pulses to tell the computer that someone is always sitting in the passenger seat. There are only 2 downsides to this $97 solution:
a) when no one is sitting in the seat, the read triangle and seatbelt warning signs are lit on the dash, indicating that the passenger has not put on their seatbelt. If this really annoys you, you can reach over and buckle the seatbelt.
b) if a small child would sit in the front seat, the airbag would be armed, even if he is below the minimum weight. Airbag360 has informed me that the default mode is that all airbags are activated with a code B1018, so really this part hasn't changed. Legally, they can't add a switch to turn off the airbag, although I seem to recall several cars that had a switch on the dash or glovebox just for this reason.
If I had more time, I would tear the seat apart and try to figure out the root of the problem. But, as it is, I am happy with this $97 solution.
https://www.youtube.com/watch?v=OdUpdkVLDIU
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LeftieBiker
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Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: B1018 Code - Passenger Seat sensor

Mon Oct 02, 2017 11:49 am

There is a recall out for this, and it should be fixed (NOT by replacing the whole seat) for free.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
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LTLFTcomposite
Posts: 4541
Joined: Fri Apr 23, 2010 6:06 pm
Delivery Date: 10 Dec 2011
Leaf Number: 5926
Location: Central FL

Re: B1018 Code - Passenger Seat sensor

Mon Oct 02, 2017 12:28 pm

We had problems with this and a recall on the craptastical Sentra, they did a software update so now the light on the dash is on whenever the front seat is unoccupied. Something about the "occupant classification system", I think the issue is the sensor in the seat can't tell the difference between an empty seat and a child. I didn't pay anything , then again this car is still under warranty - but I'd be surprised if it isn't covered even after the warranty. Nissan clearly has a supplier issue here.

https://www.autoblog.com/2016/04/30/nis ... ag-sensor/
LTL
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LeftieBiker
Posts: 9204
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 31 May 2013
Location: Upstate New York, US

Re: B1018 Code - Passenger Seat sensor

Mon Oct 02, 2017 3:19 pm

Safety recalls don't depend on warranty coverage - they are free.
Scarlet Ember 2018 Leaf SL W/ Pro Pilot
2009 Vectrix VX-1 W/18 Leaf modules, & 3 EZIP E-bicycles.
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

andystj
Posts: 1
Joined: Tue Mar 06, 2018 8:48 am
Delivery Date: 06 Mar 2018
Leaf Number: 001899

Re: B1018 Code - Passenger Seat sensor

Sat Mar 17, 2018 12:01 pm

I just ran into the same problem. My newly acquired 2011 Leaf that had its HV battery replaced in 2016 just started showing a faulty passenger airbag sensor.

FWIW, the recall only applied to 2013+ Leafs, so no help there for now. Dealer advises $3K solution of replacing the seat cushion. I'm considering the junkyard and bypass options. I have not tried the resets procedures yet, but will give that a shot to see how frequently this fault pops up. How did the bypass work out for you? I'm slightly concerned about implications for annual safety inspections. I don't know if the inspectors will notice that the passenger side seat belt remains fastened or else the indicator stays illuminated.

Andy

User avatar
keydiver
Posts: 1080
Joined: Mon Sep 05, 2011 1:04 pm
Delivery Date: 08 Dec 2011
Leaf Number: 16484
Location: Hobe Sound, Florida
Contact: Website

Re: B1018 Code - Passenger Seat sensor

Sun Mar 18, 2018 8:26 pm

For about 1 year I was able to just reset the error code, and it would behave for another month or 2. But, eventually it wouldn't reset anymore and I had to do something. As someone else said, this is really a safety issue, and you would think that Nissan would have to fix it for free, or face lawsuits for children getting killed by an airbag going off when it should be disabled.
But, anyway, I can't really help much as far as the annual inspection, except to say: either fasten the passenger seatbelt and hope he doesn't notice, or find a way to make the Leaf think the seatbelt is fastened all the time. The latter was my plan, but we don't have inspections here in Florida, and my Leaf is now sold. I haven't looked at the schematic, but it shouldn't be too hard to fool the seatbelt sensor.
There are Youtube videos on how to reset the red triangle error codes, and its very tricky to get it right 3 times in a row.
2012 Glacier Pearl SL - Delivered December 8, 2011
10kW Solar PV for recharging!
2006 Prius with Hymotion 5kWh PHEV upgrade
Tesla 70D | Titanium Metallic | Matte Obeche Wood Décor| All Glass Panoramic Roof
Tesla Model 3 Pre-Ordered!

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