I cant find the battery in my slk 280 2007 can you

hi not sure what you mean by fuel volume regulator fuel pump ect is underneath the car near the rear wheel right hand side of the car the sender unit which tell how much fuel is in tank is at the top of the petrol tank meaning a full tank removan unless there is a cap under the rear seat part which gives access to top of tank then it goes to manifold and injectors the relay for the pump is usualy in the boot next to the battery

the most common problem with those retractable hard tops are leaking hydraulic cylinders. check the insides of your trunk where the top down cylinders are located if there's a leak,and also check the level of the hydraulic fluid situated near the right brake lights.
in your slk manual, there are instructions on how to manually close the roof when the hydraulics fail.

that cant be it that code doesnt exist in my program

hey cheap ***** , if you could afford a mercedes you can afford to bring it to the dealer cheap ***

No such schedule.
spark plug every 30,000 miles
fuel filter/filter element every 60,000 or 4 years
brake fluid every 2 years
cooland every 3 years
oil changes between 14000 or more the FSS indicator on the dash will tell when need to be change

this sounds like a door switch not switching if you shut the door and left your kyes inside the car the door locks would pop up so you cant look yourself out,,,(but you can?) my money is on a door switch,, give them all a good swilling with WD40 to free them off if this dont fix it then its the car alarm it needs to be reprogramed to the kye fob and also fit a new battery to the kye fob at the same time people often forget how much work the kye fob needs to do and only when it stops working do they change the battery in it,

first thing I would try, disconnect the battery to the car for a minute, then reconnect it. that may correct your problem.

no if the fuel pump is failing it wont start. what about fuel filter ? what you can do is find a shop with a scope and they can check the fuel pump on it and look at the wave pattern and can tell you good or bad. but when it happens and you cant hear it it is time to check it properly before it leaves you stranded.

hi,you can look your amplifier sound system,maybe the fuse is blown when you replacing your battery,ty