High temps, a noisy pump, or cloudy coolant.
A worn pump, air in the loop, degraded coolant or a dusty radiator.
Pump and radiator check; for custom loops, drain, flush and fresh coolant. AIO: replacement if the pump fails.
It depends on the model and on what we find inside, so we quote each repair individually. The diagnosis fee depends on the device, and you approve the exact repair price before any repair starts. If it can't be fixed, you only pay the diagnosis.