If you can insert the key and start the car with it the problem is NOT with the key, but with the Steering Lock Module itself. As they continue to age it is becoming an all too common failure in the 159 series.
This indicates the problem is in the Steering Lock Module, not the key. Again, this is becoming a common issue with 159s and is discussed in many threads in this forum.Yes the car will start when the key is inserted.
The steering lock SOMETIMES works and sometimes not. It can be heard disengaging sometimes for example.
The wheel can be turned with the key out SOMETIMES and sometimes not.
Sorry, not sure what you mean by this? The Key Reader (TEG Reader) interrogates the Immobilizer chip in the key, if it recognizes the key it sends a signal to the steering lock to unlock the steering column and power up the rest of the systems. If the Steering Lock Module was not receiving a signal from the Key Reader the car would not power up and you would not be able to start it.But the ECU does not recognize the key linking to the steering lock module.
Yes, the key may not operate the car at some future date, but not because the key has failed, but because the steering lock module has finally failed further/completely.So is it fair to say that maybe the key will not operate the car at some future date? Without giving any warning?
It is, but you could remove the mechanical part that locks into the column and clean up the contacts for the electrics. As BazzBazz mentioned previously there are a few threads already on here. One in great detail. Removing the module shouldn’t be too much trouble if you have a dremel type tool with a cutting disc.But I think the module is linked to all the electronics in the car?
That's not quite correct, your car may have the mechanical part of the Steering Lock bypassed so that there is no locking of the column, but the Module itself cannot be fully bypassed, as it is required to power up the rest of the cars systems and is part of the "linked" security code system.It's possible to bypass the steering module, previous owner did this to mine. Removes a failure mode but means the steering lock light is always on and there's no mechanical steering lock. Not been an issue with the last 2 MoTs