Having problems with your 2000 Mercedes-Benz S-Class ?
2002 s430 fan continually runs - 2000 Mercedes-Benz S-Class
It could be the fan temp switch is worn. Its the switch that turns on the fan when the engine gets hot.The only other thing is the fan relay.
Repair Help & Product Troubleshooting for 2000 Mercedes-Benz S-Class
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