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MG MGF Technical - TF HORN

Hi All, i purchased a TF last summer and have now realised the horn does not work, I have checked all the obvious things, i.e the horn itself works when connected directto battery, ive had the wheel off but nothing looks astray, . i cant however find a fuse or relay, any ideas your help would be appreciated.

ps the central locking alarm dosent work either.
h kemal

It's almost certainly a relay in the Pektron SCU that's failed, they not difficult to replace if you're handy with a soldering iron. The SCU can be a sod to remove as it's held in place with security screws, it's similar to a torx with a pin in the middle but it's got 1 less flute than normal. I'd replace all 5 if you’re planning to keep the car for a while. Technozen sells them on eBay. See link below or search for item number 150972114944

http://www.ebay.co.uk/itm/Replacement-Relay-for-MG-Rover-Pektron-SCU-BCU-Pektron-0662P04A-/150972114944?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Model%3AMG+TF&hash=item2326a3a800

Bob
R.A Davis

Thanks for the reply, any idea where the Pektron SCU is located in the car its a 03 tf

Many Thanks
h kemal

It's mounted below the radio, to get access to it you need to remove the two panels in the foot wells that have the interior lights in them. The SCU is held in place by a metal strap that holds it up to a metal plate. You need to remove the metal strap which can be difficult if you don't have the correct security screw bit, I did mine by a combination of using a security bit that almost fitted and a pair of pliers on the head of the screw. It will be easier using the pliers if you bend up the ends of the metal strap. I did find one place that sold the security bit but I'd removed mine by then. You can replace the screws with M5 bolts it's then much easier to remove in future.

See image below of screw

Bob


R.A Davis

Thanks Very Much Bob, Your Help is very much appreciated

Kind Regards
h kemal

re R.A Davies

Finally managed to get to the BCU off, By the screw is held on by a TS25 torx, got a replacement relay from ebay as suggested, got a friend to do the soldering and finally we have a working horn, i cant beleive it, im well chuffed, especially having done it myself with a little help from my friends.

thank you very much mr davies, you are a gent.
h kemal

This thread was discussed between 02/01/2013 and 11/02/2013

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