Fan control module burnt.

[sennasurgeon]

My Fan control module on my 2000 CLK has internal burn marks.
My question is can I buy any old module as I can not find one with exactly the same serial numbers. Q-04.

I have bought a £10 one with Q-05 and I will try it.

Will it work if it has a different number? Is it a coding issue, or for AC vs non AC cars

The last photo is the cheap one I bought.

Thank you

 

[sennasurgeon]

 

[sennasurgeon]

The original Q-04 module

 

[sennasurgeon]

Any one?
Any ideas please on whether it is essential that it is replaced with an exact item?

 

[sennasurgeon]

any ideas if this issue has been discussed before?

 

[Ted]

That looks like it will work fine.
The connections are battery, earth, motor+, motor-, ignition (15) and pwm (pulse width modulation) which will be fan speed control.
So, purely a guess, that is a dumb motor speed regulator.
Fwiw, it looks like one of the motor power transistors has burnt out on the old one.
I’d give it a go, but make sure the motor isn’t seized.

 

[sennasurgeon]

That looks like it will work fine.
The connections are battery, earth, motor+, motor-, ignition (15) and pwm (pulse width modulation) which will be fan speed control.
So, purely a guess, that is a dumb motor speed regulator.
Fwiw, it looks like one of the motor power transistors has burnt out on the old one.
I’d give it a go, but make sure the motor isn’t seized.

 

[sennasurgeon]

I changed it
Turns in at 80 now