Locking/Opening Fuel Tank Filler Cover
The switch for unlocking the fuel tank filler cover is in the light switch module (LSM). The switch and lock motor are directly connected to the central electronic module (CEM). If the switch is affected, the central electronic module (CEM) is grounded and powers the lock motor which begins to function. The lock motor has a spring-loaded piston which returns to its original position after a fully completed cycle. This means that the lock motor only needs to operate in one direction.
If the function for automatic detection of fuel leakage is installed, there may be a delay of up to 1.5 seconds before the filler cover opens. This is so that the fuel tank has time to release the overpressure before the filler cover is opened. This function is only available in USA/CDN.