WIS 80.57 Drive Authorization System
- Weak Batteries in Key
The function may be affected by weak batteries in the key. If your key will not lock and unlock the car from 10 m (30ft) or more, your batteries are weak and that will compromise the strength of the IR beam. Try changing the batteries in the key before you go to more complicated (and expensive) efforts at restoring the function.
- Tip for Using Mechanical Key
Turn it all the way to the left (CCW).
- Batteries
- 2003 Update S500L Key has two batteries ie CR2025 x 2
- 2005 S500 Keyless Go Fob has only 1 Battery #2025
- How To Change Batteries