This is an interesting one, because the actual battery on an ML350 is under the driver’s front seat, beneath the carpet in a little cubby hole under the floor. This is partly for better weight distribution but also for under-bonnet packaging, but it makes jump-starting or charging the battery a little bit more complex.

But Mercedes-Benz has thought this through and has provided one negative and one positive jump-point under the bonnet. You can locate them precisely by looking in the owner’s manual. By hooking a jump starter to these easily accessible posts, you can jump-start the vehicle without removing the carpet, floor and battery. As such, the same jump-points should also work as charge points for recharging the battery.

I agree it's a problem. Unfortunately Mercedes-Benz didn't respond to our request for information on how to solve your issue, so I would suggest you contact a sat-nav specialist outlet and enlist their help.

You would expect the revs to increase when you downshift to a lower gear whether the cruise is on or not. It’s normal for the cruise to stay on unless you hit the brakes or turn it off using the switch. You can overtake by using the wand on the steering column to increase your speed and then use it again to decrease it once you’ve overtaken and it will then resume the previously set speed. You could also just use the accelerator to increase your speed and then lift off once you’ve overtaken the other vehicle and it will again come back to the set speed.