We're the (humbled) owners of a 2011 Class B Mercedes with an inbuilt ECO start/stop system. As far as I understand this is how it's supposed to work:
- Gear in neutral.
- Press the brake pedal all the way.
- Motor turns "off".
- Shift into first gear.
- Motor turns back on.
The salesman remarked that the main problem people have with this system is they don't actually press the pedal all the way to the metal. However, we're experiencing that while this system just works at times, it also just doesn't work at other times. More specifically, it tends to work when leaving home and not to work in return trips.
The operating manual is in German since this is a used car, so I'm kind of at a loss. What's going on here?