Coolant temp switch for OM606 that cuts in earlier?

[benedict]

Hi all,

I have an OM606 N/A which is a daily driver stuck in peak hour traffic (both ways) for 1 hour plus each day.

It frequently approaches 110C when driving bumper to bumper in Australian heat.

My stock coolant switch is the blue cap which works correctly shortly after I pass 105C - Is there a switch (possibly from another MB model) that will pull the high speed fans on earlier?

I currently have a switch in the cabin, which I switch on when I get to 100C to pull them on but my wife sometimes (usually) forgets to use it

It is only an issue when the car is not moving, breathing everyone elses hot air through the radiator on a typical 40C/104F day with the A/C on.

I telephoned a main dealer today and the bloke I spoke to just kept saying the blue one is the correct one for my VIN. He has no way to look up a part number without a VIN, apparently.So, a part number would be very helpful.

Thanks,

[engatwork]

Here you go:

cool harness