The "hood open" light on my 2004 e320 will not go off

Hi

my knowledge about W210 (Sedan) and S210 (wagon)

Not really sure if other modles got the same location.

Battery located under the Right Back Passenger seat.

for the seadan ... you may have to remove the back seat by pressing the corner bottoms in both sides then left it up and drag it to front to got it free... you will see the battery under it.
for the wagon... open the back right door and release the bottom seat by pressing the lock handle at the side of the seat up.... seat bottom will be cimi free to be lifted to front and then you will have free access to the battery.


if you just need to recharch the low battery... you can find the charging plugs under the hood to the left side ( +) will be covered with black plastic box... open it and connect the possitive cable (red)... ( - ) will be few inches front of that to be conected with nigative cable (black)

THE FUES BOX IS UNDER THE HOOD ON THE DRIVERS SIDE IN THE BSCK CONER

Mercedes -benz E320 w211 Oil level big red light will not go out.changed the sensor still on. Also had low fuel pressure I don't know why but when I Changed the fuel pressure sensor my oil level red light went out.

only way i can think of is to remove the center grill so you can get at the mechanism but it means braking it im afraid you cannot get at it any other way

The "strip" fuse is in a tootsie roll sized black container on the drivers side strut mount. pop it open and there it is. 2 philips screws hold it in place. Breaks in the fuse are not easy to see.

Most likely pin switch in the hood area ground has corroded not giving a good signal or switch is bad. Replace as needed and have the area preped on change out.

you will have to go to a dealership for it they got the reset switch for it you can try to call them and maybe there is a sequence you can do to shut it off but most of the time they have to do it sorry i could not be any more help

Your Climate control unit may have to be reset. The reset works as follows: With the key in the ignition and in posistion 2 push both the defrost button and the recirc button (at the same time) for five seconds or untill the led lights in those buttons begin to flash. Wait for 30 seconds or untill the led's stop flashing. Switch off the ignition. Check the evaporator temp sensor and pressure sensor for correct functionality.
Courtesy of benzworld.org/forums

under the hood on the drivers side of the car

It is always safer to charge the battery out of circuit, Removal of one cable will insure you can safely charge without hurting electronics on board. Generally if your battery is already sufficiently charged it acts like a capacitor in the circuit and will prevent damage, but many battery chargers do not always put out a pure dc voltage and this can damage electonics.