Automatic Shutdown Protection Feature
WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Below are automatic shutdown modes built into the heated wash system. When any of these modes are activated, the heated assembly will shut down and request the IPC to transition the DIC to display the HEATED WASHER FLUID WASHER SYSTEM OFF message.
- Under Voltage - The system will shut down if battery voltage goes under 10 volts for 5 seconds.
- Fail to Heat - The system will shut down if the fluid does not heat by 5°C (41°F) within 28 seconds.
- Fail to Cool - The system will shut down if the fluid does not cool by 2°C (36°F) 4.75 seconds.
The following shutdown modes will require an ignition cycle to resume normal operation:
- Printed Circuit Board (PCB) Temperature Over Threshold - The system will shut down if the unit PCB is greater than 125°C (257°F) for more than 2 seconds.
- Temperature Sensor Shorted High - An internal heater assembly measurement. The system will shut down if an internal short is detected.
- Automatic Over Temperature - The system will shut down if fluid temperature exceeds 85°C (185°F) for 2 seconds.
- Automatic Over Voltage - The system will shut down if battery voltage exceeds 16.4 volts for 4 seconds.