Holding start button to get starter to work.

[ridds]

What was the cause of this?

I had it happen to me once over the weekend. It's done it since but was curious as to the cause of the issue so I can try and prevent it happening again.

[RUSSELLM]

I think the main culprit is normally the immobiliser unit.

[99 speed 6]

I had the same problem on my Cerb, ring 0772 072 3407 Carl Baker. He will explain the problem and suggest a solution, great bloke.

[optimax sniffer]

For me it was a tired starter motor, a quick clean out of the dust and debris, and a quick lube, and it has been fine since

[ridds]

Only did that a few weeks ago, probably done 500 miles since.

[Ireland]

ridds said:

What was the cause of this?

Starter motor circuit through the immobiliser.

[ridds]

I thought it may be something to do with the Ignition control module.

As the Ignition button is bi-functional I thought it may be the part that switches the function from activating the "power on ignition" mode to the "activate the starter circuit" mode.

Is that handled by the Ignition control module or does the immobiliser isolate the fuel and starting circuits separately.

[Ireland]

There are several circuits (6 I think) that go through the immobiliser.

The starter motor is only one of them.

Even if the starter motor circuit in the immobiliser fails "the other way" (ie sticks closed) the engine will turn over but still won't start as the other circuits keep our toys safe.