R129 1991 500SL Turns Over But Will not Fire

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Right, Just waved Green Flag goodbye. We've got a bit further.

In short, if you spray Easy Start into the fuel inlet on top of the engine underneath the filters, it starts. So there is a spark.

There is a quarter of a tank of fuel so its not fuelling.

The remote central locking still does not function. The symptoms are exactly those of an immobiliser that still thinks its armed, because usually if you leave the car and do not start it, the indicators flash after about 45 seconds, and you get these EXACT symptoms. However, locking and unlocking disables the immobilizer, allowing the engine to fire.

So, my guess is that there is a relay somewhere thats had it, or the black box in the boot has had it?

Any ideas?
 

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