In case, as I experienced when I mistakenly bought a two stage airbag steering wheel, instead of one stage for my car, I would like to give this advice to any one who is thinking of getting a new or refurbished steering wheel.
These are two different type of steering wheels, on the left is a one stage airbag wheel and on the right is a two stage airbag wheel.
It is nearly impossible to put a two stage wheel, in a car that was born with one stage steering wheel without some major modifications. My advice and 2c, do not try to attempt to do that conversion, unless you have a good understanding on reprogramming the ECU bin. files, (that is if you decide to convert it to a functional two stage airbag car) and a fairly good understanding of your car wiring. So far, I have not heard of anyone that has made this conversion 100% to the specs and correct......> BUT, there is an "easier" way around this, by scarifying one of the stages of the airbag, thereby it becomes a one stage airbag steering wheel, like the one you have in the older BMW´s like mine from 1997. You can read more with; Two Stage Airbag On One Stage Configuration.
Sins writing this above in 2016, I have installed the two stage steering wheel, back in late 2018 and I got it to works perfectly as an one stage air bag steering wheel. Everything works perfectly, including all the control buttons, without getting the red airbag warning light! and again in late 2020 I installed ones again a "new", two stage steering wheel with shifter flaps, with the same positive results
You can read more about how to make this changeover with other pictures and "info" I have in my portfolio.
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