My wifes 89 300 SE is heating up to the red line today. I checked and the AC cooling fan is not coming on. I checked the fuses but didn't see any blown. I know there is any easy test to make a connection and the fan should come on but I for got how to do it.

Any help appreciated.

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FL Ken
89 300SE, 157,212 miles
new addition, an 86 300E, 188,900 miles for 17 yr old daughter
97 Expedition 4X4, 114,230 miles
98 Honda Valkyrie, 48,987 miles

Past Mercedes:
82 300SD, 168,350 sold
78 300CD, 118,600 sold(wish I still had)

You need to touch the two wires at the dryer switch together to make the fan come on. I suspect you have more issues than just the fan not coming on.

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Jim

I did find the 16 amp fuse blown and didn't have another, so I put a 25 amp in it for now. The fan is working OK but will get a new 16 tomorrow to see if there are issues with the fan motor.

Thanks

__________________
FL Ken
89 300SE, 157,212 miles
new addition, an 86 300E, 188,900 miles for 17 yr old daughter
97 Expedition 4X4, 114,230 miles
98 Honda Valkyrie, 48,987 miles

Past Mercedes:
82 300SD, 168,350 sold
78 300CD, 118,600 sold(wish I still had)