Overheating, and the missing part that caused the failure
The concern
The vehicle was overheating. The customer suspected a failed thermostat or a cooling system that needed to be flushed.
What the customer suspected
A thermostat or a coolant flush are common answers to an overheating complaint, and a reasonable place for a customer to start. Neither was the problem here.
The diagnosis
Testing found a defective electric cooling fan control module.
The contributing cause
The inner fender liner was missing. Without it, rainwater and road splash could repeatedly reach the module, contributing to its failure.
The repair
We addressed the defective control module and replaced the missing inner fender liner to reduce future water exposure.
Customer benefit
Replacing the module alone could have left the new part exposed to the same conditions. Correcting the cause as well may help prevent a repeat, although no repair can guarantee a part will never fail again.
This repair is one of three told in Don't Just Fix What Failed. Find Out Why It Failed.
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