You want to make sure that the one you chose is perfect for what you need it for. The best way to make sure you’re satisfied with your fan control unit module relay replacement product purchase is to contact the company for a return or exchange within 30 days of receipt. The best after-sales service for fan control unit module relay replacement productsĪfter you buy a fan control unit module relay replacement product, what’s the best way for it to have its problems resolved? Now that we’ve discussed in more detail and determined which type of service is right for them. So you need replace the relay to keep cool. When your vehicle overheats, hot coolant could pour out and cause the fan unit to short out. Your coolant radiator fan control module relay may have failed. When you drive your car meet the engine running hot, cooling fans do not function, cooling fans stay on at all times. The relay will usually be activated once it is detected that the vehicle’s temperature approaches excessively high temperatures.