Build Seat Occupancy Bypass - Airbag light fix

[MyDegis]

Have you done any testings before posting this video? do you know that by using this configuration you only disabling the airbag light. The canbus under the seat has AC/DC 4V that is shifting in the occupancy mat all the time and if you check with the scanner you will see that occupancy mat is still faulty... which is not what it supposed to be. (i'm electronics engineer) . You need the right load and phase shift to fool the computer.

[tiganhonda]

@MyDegis That's incorrect, If you read back on the comments you'll see I described how it operates when installed.

The resistance at this resistor is equal to that of a perfectly functional seat that is being sat in. That means that in the event of an accident, regardless of whether there's a passenger in the seat, the passenger airbags (dash and door) will fire if the accident is severe enough.

[tiganhonda]

@MyDegis The system runs a check for errors every time you start the car and if there is a problem found, the ECU will instruct the ACM to disable, preventing the bags from firing. With this resistor in place, the ACM never gets the signal that there is a fault with the mat, instead it gets the signal that the seat is occupied and functional. You can scan the car with anything from Carsoft, GT1, INPA etc and you will clearly see there is no fault reported.

[Kaklama13]

Why did you use a diode. What is the total resistance?

[bmw528mpower]

Thank you for your video.

[tiganhonda]

@bmw528mpower You're very welcome mate. :)

[Avi4674]

i dont want to use my OLD occupancy sensor connector from the mat..instead use NEW connector and my own regular blue and white wire will bypass work ?

[tiganhonda]

@Avi4674 Im not quite sure what you mean, Why would you not want to use the old connector? so long as its clean it'll be fine. :)

[Avi4674]

will it work for 2006 bmw e90 driver side ? please let me know. Thank you very much

[tiganhonda]

@Avi4674 Hi, I haven't tried it on the E90 im afraid.

[Avi4674]

will it work for 2006 bmw e90 driver side ? please let me know. Thank you very much

[520BC]

Have a 318i Touring 1998 E36.Also had a problem with broken seat sensor 2 wires.

Airbag light turns on then off for 1 second and stays back on.

I placed de mod, have to reset de fault and the airbag light turned off.Good Job!

Thanks from the Netherlands.

[tiganhonda]

@520BC Your very welcome mate. please leave a thumbs up if you found it useful, if ya dont mind. :)

[robnav2003]

I have a 2006 BMW 330I with the same issue as "evethang." My seat has three wires instead of two going to the module. Any idea how to make a bypass for a seat with three wires?

thanks

[evethang]

i was wondering if you know how to make the one for the 3 wire seat with no black box. I have a 2006 E53 and it has three wires and not black box. Please help.

[44Lakeview]

I have the same intermittent problem with a new 2012 Volvo S60. Do you know if your fix would work? This is an untouched video showing a defective airbag "safety " feature on our new Volvo 2012 S60. My wife is obviously seated, with her seatbelt fastened, but the Volvo's sensor is saying that the Passenger Seat Airbag is OFF.

We bought the Volvo for maximum SAFETY, but we noticed that we are driving around with the airbag intermittently turned off for my wife! This is terrible, and you

[japemw]

Hi, this make error dissapear but systems tells that nobody is sitting on the passenger seat. Dangerous! Car E39 528i -97 INPA soft, livedata from airbag unit.

[tiganhonda]

@japemw Then you have either a problem with wrong resistors or maybe cheap/damaged resistors.

If you make it like i showed then it will ALWAYS show the seat as occupied. :)

[lukewowk]

What tool is used to check and reset airbag light on 2006 BMW 530xi. I`ve heard that the Peak SRS tool is only good up to 2004, correct ?

[tiganhonda]

@lukewowk I use INPA which is a BMW software and you can buy the cable and software off ebay for 20 quid.

[lukewowk]

do i still need a reset tool to reset the airbag after putting a bypass??

[tiganhonda]

@lukewowk That depends on whether the light was on permanently or not. if it was an intermittent fault then no, you dont need the reset tool. If it was on constantly then you will need to reset the light.

[congur]

Anyone have try it on BMW E60 if this works?

[congur]

I have to answer to myself here :) I did the bypass I connect the cable I start the car and the airbag still was on but I after that I did reset tool and now is over 10 days and the airbag light didnt came back, happy for it, and thanks for this video :)

[tiganhonda]

@congur Glad it was useful to you mate. :) I see you are in Sweden, Does your E60 have a 3 wire occupancy sensor like the UK & Ireland ones? or a 2 wire regular one?

[congur]

@tiganhonda Thank you again :) And yes it's 2 wire regular on mine, since my E60 was imported from Germany 2006 but I can think and be sure that is the same too in Sweden. Cheers

[fleshDevice]

\Done it to the missus 328i and all Good now thanx no more bleeting onya

[tiganhonda]

@fleshDevice Glad to be of help pal. :)

[87starion]

Hi, great little mod. Will this tell the MRS that the seat is occupied? Cheers

[tiganhonda]

@87starion Hi, what do you mean by MRS?

[Thenyymi]

works like a charm! :) since the mat in the seat was broken anyway,i took about 3-4 cm of wire and the connector from it,and then connected the bypass to it. when that done,connected it to the module. no fear of sparks. :)

[tiganhonda]

@Thenyymi Glad it worked for ya mate. :) No more annoying airbag lights and such a simple mod huh. :D

[ybewiz]

Great video. Any idea if this will work for a 2006 530XI Wagon? E61

[tiganhonda]

@ybewiz It will indeed, Ive done it on one myself. :) Just make sure that you are having the occ sensor problem instead of some other restraint system fault before doing it. :)

[nastastic]

Hey thanks for the video can you please post a video or explanation on how to install the sensor? does it go into the back of the cut sensor plug? or the back of the sensor computer? thanks great vid

[tiganhonda]

@nastastic Hi, theres instructions in the previous replies. :)

[tiganhonda]

@nastastic Hiya mate, I know its been a while since this was posted, but i have a video up showing where the sensor goes with instructions etc. have a look in my channel, its fitted to an E46 but the same applies to any.

[jochylbb]

can i use in a e60 525i 2005

[tiganhonda]

@jochylbb you can indeed yup.

[zerosyc]

@tiganhonda I am trying to do this to my E60, however, I can't seem to identify which is the plug (with the two wires) do you have picture to help? Or I can take pictures and you can point out to me which is which.

[qnguyen492002]

Respond to this video... 

[qnguyen492002]

Respond to this video...  which cable do i need to connect the bypass to?

[qnguyen492002]

@jochylbb where you able to do this for your 2005 525i?

[djmuller33]

Why do you use a diode? Do resistors only work in one direction? I need to create one of these for a 2001 Hyundai Sonata, the tipping point for the system turn on the airbag is 50K Ohms(less than indicates occupant in passenger seat, according to a Hyundai Service Bulletin that I downloaded.

[BoogityBoogityBoo]

do I need the reset tool to turn off the light after installing the bypass? or will installing actually turn off light?

[AKennedy100]

- 100 ohm resistors (2) 1/4 watt 5% tolerance - 1N4001 diode (1). Is what I used, all from Radio Shack

[AKennedy100]

Worked great. First try. I couldn't believe it.

[AKennedy100]

100 ohm. 1/2 watt? 1/4 watt? 1/8 watt?

[Audigy2records]

Sorry asking, but can you do it with a fiat stilo 5dr from 2002?

I think that a few tousands of people would be much apriciated.

Regards.

[tiganhonda]

hi, i dont have access to it at the moment, look under your passenger seat. theres a plug with 2 wires in it. blue and white.

Unplug that, you wont be plugging it back in. Chop off the plug and replace it with what you made from the video. thats it.

You dont "have to chop off the plug, you can just splice into it behind the actual plug and wire it that way.

[pingoewear]

@tiganhonda 100ohmn/how many watt resistor?

[camry4ever]

@tiganhonda Hi..thank you for this great vid, Can I use this method for to bypass the seat belt bucket sensor? I would try it any way, I have the feeling it would ,but to which wires should I connect this module ??I have e39 540i,,

[pingoewear]

also would you be able to send us a pic of were we would place this bypass?

[pingoewear]

I would like to know how many watt resistor. 100ohm/?watt resistor

[brockman2013]

is it a 100 ohm 1/4 w resistor

[nigzcurran]

cheers

[tiganhonda]

hey, the codes for them are in the "you will need" bit at the start of the video. :)

[carbidutz]

Hi. Could you please tell me what are then names of those diodes and what do I need to ask for in the shop to make on of these. Cheers

[tiganhonda]

Hi,

yep, you only need the one and its on the passenger seat. You unplug the blue and white wires from the control unit and fit this to them. You don't reconnect back to the control unit. Hope that helps. :)

[langmanmj]

Hi do you just need the one. Also is it connected  before the control unit box Thanks