1992 500 SEL. Where are ignition coils located?

SOURCE: fuel pump filter for 1992 mercedes benz 500 sel

1992 mercedes fuel pump filter is located on passenger side behind rear drive axle. disconnect battery, raise car and secure it with jack stands, remove rear tire, you will black plastic shield that protects fuelpump and filter

SOURCE: vents blowing hot air while driving

hello I'm an M.B. tech, sorry I thought I sent this yesterday but it is not in my solution box. If your vehicle is actually blowing hot air and not just ambient ait through the vents the only reason this could be is that coolant is entering the heater core all the time. Mercedes had 2 ways of doing this from that era. The earlier version had a vacuum water valve against the rear firewall. The other version had an electric valve called a mono valve by the battery tray. I would think it would be very likley to knock of a vacuum line doing an oil change but most likley you would have other problems as well. The water valve had a red vac, line going to it. Your vehicle probably has the electrical valve which is ublikley to get damaged during an oil change. most likley the diaphram is ruptured. There are 4 slooted screws on top of the valve. If you remove those screws you will gain access to the insert(plunger for solonoid). Take the rubber seal and stretch it out. Take a close look for tiny tear in seal. It is a very common problem with the monovalve type system. You can replace just the insert and it saves alot of money as compared to the price of the monovalve. hope this is helpful.

SOURCE: what does ars mean i have a merceds benz sel 500

this is for your Active Restraint System. there is a problem with these circuits that will require a mercedes specialist to be able to pull codes and decipher what needs to be repaired/replaced. you can also continue to drive it without consequence, however you will have no added protection in an accident.

SOURCE: FIRING ORDER OF 420 SEL MERCEDEZ BENZ 1991

15486372 With the number on thru 4 cylinders on the right bank and 5 thru 8 on the left bank as seen from the drivers seat.

SOURCE: 1984 Mercedes-Benz 500 SEL

In the driver's side trunk along the wheel well and behind the wheel well cover you will find the sunroof motor. There is a plastic knob that can be turned to close/open the roof manually. The socket tool is part of the original toolkit that came with the car, but otherwise, you can locate one that will fit. Don't use pliers as the plastic easily breaks. Meanwhile, have you looked at the fuse or toggled the switch hard to work? If the motor works, but doesn't move there is an adjutment on the motor's clutch that can be tightened. Hope this helps.