Question about 1989 Mercedes-Benz Mercedes Benz 500 Class

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Anti-theft alarm will not reset on 1989 mercedes 420 sel

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Puppet03
  • 172 Answers

SOURCE: 1995 Mercedes Benz E320 Wagon, How do I reset the anti theft

If your talking about an immobilizer then i would get the red key chain holder to the car it would reset the immobilizer.....or call the dealer sry if i could not fully help you

Posted on Oct 30, 2009

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  • 2187 Answers

SOURCE: The door locks on my Mercedes 420 SEL lock

Inspect first the wiring of the car. A grounded wire may cause this.

Posted on Nov 11, 2009

  • 58 Answers

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.

Posted on Jan 05, 2010

iambanshee74
  • 3489 Answers

SOURCE: 1990 Mercedes Benz 420 SEL computer problem? wont

This could be caused by a faulty Crank position sensor. The computers are expensive for this and not something that commonly fails on these. Have the fuel pumpchecked for operation and pressure. Check for spark at the plugs. Then we can procede further if you would like.

Posted on May 22, 2010

iambanshee74
  • 3489 Answers

SOURCE: I am getting no heat

No. The lack of heat is usually attributed to the heater control valve tearing a diaphragm. They also use an electric waterpump on the passenger near the fender well. These items do need to work in conjunction with one another. Let me guess, heat will trickle in until you hit the gas and then nothing?! Typical of the heater control valve behind the firewall, passenger side, under the hood. Black in color and a 2 pin connector to it. It uses a electromagnetic solenoid which when activated, raises the diaphragm and allows water to pass. When torn, they block the flow. What makes these so easy is, when you remove the 4 slotted head (or flathead) screws in the small square control valve, you lift it up and replace the diaphragm. You loose very little coolant and it only takes minutes. You can find the repair kit online for about $15. Let me know if you need anything else.

Posted on Nov 08, 2010

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Generally the fuel gauge and low fuel warning light has a separate circuit from the fuel pump even though mechanically they share the same space and could conceivably affect each other.

I suggest you put your preconceived ideas on the back burner and go back to basics. Check fuses, check supply voltages, check in the vehicle handbook whether there is an anti-theft system and so forth.

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