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CRC

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    98 Boxster 2.5

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    Trowbridge, Wilts

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  1. CRC

    Horn Fix

    Recently, I've noticed that whenever I get myself physically into into the car, the horn invariably beeps at me (that's the car horn and not the alarm). I assumed that I must have been inadvertently pressing on the horn part of the steering wheel, but then last week on a drive, it became apparent that every time I braked reasonably hard, the horn would beep. Luckily it happened on a quiet country road, with no-one else around so it became clear that it was my car and not anyone else. A bit more experimenting and making sure that my hands were well clear of the wheel centre confirmed that the car was "doing it by itself". An internet search showed that this is a fairly common problem, and the solution is to fit 8 O rings onto the flexible posts of the air bag bracket that lives behind the air bag. A Youtube video shows how to do it, but it would have been good to know the correct O ring sizes to solve the problem, and the American poster referred to using #31 O rings. A search on this number seemed to give much bigger O ring sizes than he seemed to be fitting, but a second video allowed a freeze frame of the O ring blister pack and for information the #31 O rings are 5/16" ID, 9/16" OD and 1/8" thick. Obviously these are imperial sizes and no doubt there would be metric equivalents, but they are available on EBay at £1.99 for 10 delivered. They duly arrived today, and after fitting have solved the problem. One thing I would say is that the two screws at the back of the steering that release the air bag are very tight as they have been installed with a thread lock solution, so I found that a good quality T30 bit 75 mm long was a perfect length to access them and in conjunction with a 1/4" drive ratchet and suitably sized (4BA) 1/4" socket provided enough torque to break the thread lock and allow the screws to undo easily. All you then need is a 19 mm socket for holding bolts which are very easy.
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