Climate Controlled Seat System Recovery Mode

If the temperature at one of the TEDs  rises above 110°C (230°F) in the heat mode or 65°C (149°F) in the cool mode for more than 4 seconds, the DCSM  will record an overtemperature DTC, remove voltage from the TEDs  and go into recovery mode (blower only) for 30 seconds to cool down the TEDs  . The same will occur if a temperature difference of 60°C (108°F) or greater is seen between the backrest and cushion TEDs  on either front seat. The DCSM  will continue to monitor the TEDs  while in recovery mode. If the temperature of the TEDs  does not drop to 105°C (221°F) in the heat mode or 60°C (140°F) in the cool mode after 30 seconds, the system will continue to cool the TEDs  in recovery mode for up to 5 minutes. If the TEDs  cool down at anytime after 30 seconds, but before 5 minutes (checked at 4-second intervals), the system will operate as normal. An overtemperature DTC will still be recorded even if the system recovers and is operating normally. This is more likely to occur during extreme cabin temperatures with significant seat back sunload. If the system does not recover within 30 seconds in heat mode or within 5 minutes in cool mode, the DCSM  will disable that seat (fault mode) and remain off until the ignition is cycled. Also, if the DCSM  detects temperature differential fault twice during the same ignition cycle, it will shutdown. When a fault causes a shutdown the climate controlled seat indicators will turn off and that seat will not be operational until the next key cycle.