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Anonymous Posted on Aug 04, 2012

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

5 Related Answers

Puppet03

Puppet03

  • 172 Answers
  • Posted on Oct 30, 2009

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

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Anonymous

  • 2187 Answers
  • Posted on Nov 11, 2009

SOURCE: The door locks on my Mercedes 420 SEL lock

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

Anonymous

  • 58 Answers
  • Posted on Jan 05, 2010

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.

Anonymous

  • 3489 Answers
  • Posted on May 22, 2010

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.

Anonymous

  • 3489 Answers
  • Posted on Nov 08, 2010

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.

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Related Questions:

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2011 Mercedes Benz ML-350 Basic. I need to deactivate (reset back to normal) the Anti-Theft system, so I can see the panel, radio, telephone, reverse camera, etc.

Question edited for clarity.
Question moved to model category.

It is a Mercedes, you need the dealership, an auto electrician or an Auto locksmith / Alarm installer. It is the most electrically over-engineered brand on the market. some are PIN Locked so that only registered technicians can reset based on VIN Number.

https://www.google.com/search?q=2011+mercedes+benz+ml+350+reset+anti+theft+system

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HOW CAN I DEACTIVATE ANTI THEFT MESSAGE ON W204 MERCEDES BENZ C CLASS. IT WONT START?

How do I get my Mercedes out of anti-theft mode?

Look for a button that allows you to slide the physical key out of the fob. Step 2: Turn the vehicle key to unlock the car door without releasing it. Hold the key for 30 seconds in this position. This will signal to your car's system that you have the right key, and will enable you to bypass your car's alarm system.

https://www.google.com/search?q=MERCEDES+BENZ+C+CLASS+reset+security

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Anti-theft goes off on 93 nissan 300zx

youv've engaged the anti-theft circuit it will need reset at a dealer
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Radio unlock code for 1990 mercedes benz 420 sel please

We do not have access to the factory data base for your car radio security code. If the codes were available for free online they would be of little use to deter theft.
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How do you change the fuel filter for 1989 mercedes 420sel

Location of the fuel filter on a 1989 Mercedes Benz 420 sel
1helpful
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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.
0helpful
1answer

The door locks on my Mercedes 420 SEL lock

Inspect first the wiring of the car. A grounded wire may cause this.
1helpful
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1989 300e. The anti theft alarm went off while driving the car now the engine won't start. We shut the car off and locked and unlucked the doors several times. The alarm reset and we began driving again. A...

This is the problem due to your anti theft alarm system. You have not mentioned which brand of anti-theft alarm system you have? Anyhow, most of the systems have a reset switch inside the kit, open the kit and on the main board, u will find the reset button, press that and hold for 5 sec, the system will be reset. Otherwise, there are 2 or 3 fuses with the wiring of kit, remove those fuses and ur engine will wake up but the anti-theft system wont work then, hope this will solve the problem
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1991 420 SEL Merecedes

Mercedes electrickery is complex and can be temperamental, plus it could have an anti-theft system to further complicate matters. It is entirely possible your car has more than one fault and possibly more than two...

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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