M & S Cog lights flashing when engine is cold

We have a Discovery Jan 2004 , we have had it for 14 years, the mileage is now at 114,000.
Recently when starting from cold the engine revs start to go high then the car jolts and the M & S lights flash, along with the D dive indicator. The car is now in 3rd gear "limp mode".
To get rid of these flashing lights and get the car back to normal, we have to stop, switch off, set the alarm, wait a few seconds, switch off alarm and restart the engine.
This process can occur 3, 4 or 5 times until the engine is hot , after which its fine.
The XYZ switch has been checked and cleaned, the ECU has been cleaned after oil was found on it.
So can anybody advise what is causing this and what we can do to eliminate it.

Hi Bry,

Welcome to the looneyzone,

You may find it better if you post your question in the Disco section. Lots more traffic to see the problem.

Good luck.

Cheers

neilly said:

Hi Bry,

Welcome to the looneyzone,

You may find it better if you post your question in the Disco section. Lots more traffic to see the problem.

Good luck.

Cheers

Click to expand...

neilly said:

Hi Bry,

Welcome to the looneyzone,

You may find it better if you post your question in the Disco section. Lots more traffic to see the problem.

Good luck.

Cheers

Click to expand...

How do I find the disco section?

Top of page select forum, scroll down in the forum until you get ot disco section , post in there.

Cheers