Originally Posted by JimF

Unless the 'behr' version has a dual frame (that's functions as a second bms), it can't bend at two different temps. Your conclusions are not valid. But I told you that before. The BMS can NOT bend at two different temperatures.

Check out MENU#20 and look at the pic toward the bottom of the page (pic with the adjusting screw mounted to the bms), you will see the Mercedes part number clearly marked onto the bms, 119 200 00 22. So it must be a valid MB part. It came from the local MB dealer!

It certainly could be that some other suppliers VFCs work at a more reasonable cut-in temperature but these from Sachs with the as-marked bms, do not.

As I started out in this thread, there are (hopefully) some VFCs that work at a reasonable (95C) temperature. We know that MB made a "tropics" VFC version (BongC36 thread) that locks at 90C and it's a "Sachs"! But the Sachs VFCs for MB autos that use the 119 200 00 22 VFC, this version operates at a much higher temperature and almost makes it useless.

In one of LeaUK posts: "Coolant Temp Max 130C". MB said that "driving the (W140) in severe operating conditions such as stop-and-go city traffic, the coolant temperature may rise to close to the red marking. This is ok but it should never go into the 'red'".

So using that logic, then if the "sachs" vfc cut-in at 120C (coolant temp), it's still "OK" (for somebody else but not me!). In that circumstance the vfc still "works" and serves a function. But I think that's really pushing it.