I have a 2015 SL400. The manual states there should be a boot release button on the driver's side just by the door pocket. Mine does not have one. Also there is no facility on the key to open the boot independently of unlocking the car. On my previous SLK350 I had a separate button on the key fob. Problem is, if my passenger needs access to the boot whilst I'm in the driver's seat, e.g. dropping someone off, I have to get out of the car to open the boot. Passenger finds it difficult to open boot themselves - risk of broken finger nails etc. Is this common on this model or have I been short changed?