Car Immobiliser Trouble

If your car has an immobiliser (if you are WA chances are high) this may be helpful. If you drive only newish cars don't bother reading on:-)

The engine of my car stopped last night and couldn't be re-started: no ignition voltage, in fact no lights on the instrument panel at all. I suspected the immobiliser (it was immobilised alright!)and opened it up.

After locating the black box under the dash, pulling it out and removing some very sticky tape and a cable tie, I saw that it was built in 2003. It has the type code 6XR V4 and seems to be this model:

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4 screws needed to be removed to open it up. A visual inspection was enough to locate the problem: There are two relays soldered on the PCB. The solder on the coil terminal pads had suffered vibration stress and gone all crumbly, so the relay coil connections had gone open circuit.

After re-soldering it works just fine again.

This could have been an intermittent fault and stuffed me around a lot! I was kind of lucky.

(If it happens to you and you DIY, make sure you disconnect power first or you might cause more damage)

Tony

Reply to
TonyS
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Hi Tony,

Haven't had any problems yet - touch wood. Thanks for the heads up. I'm sure others may have been bothered by this problem.

Cheers, Alan

Reply to
Alan Rutlidge

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