Easy Methods To Change A Seat Occupancy Sensor

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This undertaking has been a very long time coming for me. Virtually a 12 months ago I left my home windows down throughout a pretty impressive thunderstorm (by chance pressed the unlock button on my key in my pocket while I used to be walking away from the automotive and each windows and the sunroof opened), and on account of some somewhat drastic measures on my part to dry out the automotive the only lasting harm was that I now had a seatbelt and airbag warning gentle on my dashboard. I was fairly rapidly able to find out that these lights had been being caused by a faulty passenger occupancy sensor. Unfortunately, BMW does not promote simply the sensor, but relatively the complete backside seat cushion for a cool $1200. Nicely I did not need to do this. So I managed to make it by means of many a month with these annoying warning lights until sooner or later I happened upon an inventory on a salvage car components site that was selling a standalone seat sensor! I snatched up the half after which spent a complete day switching them out. In researching how you can get into the seats I used to be unable to seek out much of anything useful on this discussion board so I figured I ought to write up this DIY to assist others out. 1. Take away the seat (duh). You will use the T50 bit to take away all 4 screws holding the seat down. As soon as loose, go to the trunk and disconnect the battery. Again within the cabin, push the chair again so you may see underneath and git.skewed.de disconnect the yellow wiring harness. There's a black tab on the aspect which you could fit a small screwdriver in. Pull that tab out as far as it should go, then pull out the wiring harness. There's a separate wire connector on high too: squeeze the sides to launch it and disconnect that too. Now pull the seat out of the automobile. This is less complicated in case you also take the headrest off. 2. Now you are going to must remove the plastic cowl on the righthand aspect of the seat that has the seat controls on it. This piece is held on with 5 plastic tabs: Three are visible on the bottom of the piece and a pair of are hidden inside near the top. I used to be in a position to get all however the righthand inside tab using simply my palms. To get that final tab I had to bend a hook form into a bit of thick wire and fish that through to the tab and pull the tab whereas pulling up on the whole piece. That was troublesome. Once off, you may see methods to controls are wired up, simply unplug them so you can remove the trim entirely. 3. Once the outer plastic trim is off, you'll be confronted with a second plastic piece. To take away this there's only one bolt (T30) and then you definately simply have to wiggle it round until it pops off. There are some wires connected to this piece with a plastic rivet which doesn't look like it is meant to come off so I left this piece nonetheless partially attached to the seat. 4. Next, there's another plastic trim piece on the opposite facet of the seat on the back nook. Use the T20 bit to take away the screw, and pull the piece off. 5. There's now only one final piece of trim left, and it's a ache. It is the lower plastic piece on the front of the chair. You may see that there are three attachment factors. The outer two are simple: simply depress the outward going through tab with a small screwdriver and pull outward on the piece. They're going to pop out. The middle attachment level is harder as a result of the tab you'd need to press in is actually going through inward towards the seat so you can't get to it. You'll be able to, nevertheless, use a small screwdriver and put the pinnacle inside the attachment point, angling it so that it catches on the tab on the inside, and pull the piece downward. It'll come off ultimately. 4. Now it is time to start out removing the leather! The point of eradicating all this plastic trim was to be ready to easily and absolutely remove all the seat cushion. Note how all around the seat the leather-based is stitched to this plastic lip. Now that we have eliminated all the trim, you possibly can pull this plastic lip off of its hold on the seat frame. There's one lengthy piece for the whole front, one medium piece in the again, and two brief items, one on either back aspect of the chair. Also make sure to undo the little bits on the back corners the place the leather is held by a plastic button and is stretched over a metallic nub. Now we will pull the again flap by the gap in between the higher and lower halves of the chair and then, from the again forward, pull the cushion up. There's just one final point of attachment: just before the leg extension there is a plastic rib that's hooked up to the seat body. This rib is simply held in by some metallic tabs, you can start on one end and pull up and it will come out. 5. Now for the true enjoyable part: we need to take away the leather from the foam cushion in order that we are able to get at the occupancy sensor. On the underside of the cushion, starting from the again, you will see many metallic hogties. I used a pair of pliers to take away them. Simply pinch the ring and switch it till the ends are facing you, then pull them apart and remove the ring. There are 4 on the surface of the cushion to take away. Then on the inside you'll need to remove a bunch extra. I did 11 rings in whole, I believe. Once you get get deep enough between the foam and the leather-based, you possibly can fully take away the old sensor. It's glued in on the front and on each aspect bolsters. 6. Put in your new sensor! I glued mine back in with some Gorilla Glue Gel. Watch out as a result of not a lot appears to stick with that foam. I in all probability went via 4-5 completely different glues earlier than I found the Gorilla Glue. 7. It's all downhill from here. Now it is advisable reattach the leather to the foam. To do that, I used zip ties. Simply put them in the exact spots the place you eliminated the steel rings. For among the harder parts to get a zip tie in place, I was capable of push my metallic wire by the opening and use it as a information for the zip tie. 8. Reattach that sucker again to the seat body. Nothing too tough right here, just take it sluggish and go in the reverse from earlier than. It will all match. Do not forget to plug in your new seat sensor to the chair. 9. Reinstall the chair. Overall this venture took me about 6-eight hours. Eradicating the plastic trim is difficult, eradicating the hog rings is a ache, and getting the leather-based reattached to the foam takes time. That said, it's all utterly doable with minimal tools. I've written this up as best I can, but I am sure I unnoticed a number of steps.