Question about 1998 Mercedes-Benz C-Class

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My alarm lights keep flashing on my Mercedes 1998 C240. I have heard this is due to alarm horn failure, but can I just disconnect the alarm and solve the problem?

My alarm lights keep flashing on my Mercedes 1998 C240. I have heard this is due to alarm horn failure, but is there a way to just disconnect the alarm or alarm sensors to solve the problem?

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: Replace Cabin Filter in my 2002 C240 Mercedes Benz

after changing air filter and spark plugs engine still shakes ???

Posted on Jun 19, 2008

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dgjtex
  • 405 Answers

SOURCE: mercedes ML 320 1998. My horn does not work

About four things to do, first check voltage at horn with key on and button pressed. If voltage there try moving the small gap screw back and fourth a few times. If that doen't work replace horn. If no voltage check fuse and horn relay, you should be able to hear the relay click when you push the horn button, If not and fuse is ok. Switch relay out with another on on the car. If that doesn't fix it check the horn button for continuity.

Posted on Dec 27, 2008

  • 43 Answers

SOURCE: 2004 mercedes c240 alarm sounds for no apparent reason

Hi, You need to replace the alarm siren. It is also a module. It is located in the right front fender well. The reason they go bad is because they are located in a place where they get wet.

Posted on Apr 07, 2009

  • 14036 Answers

SOURCE: c240 mercedes wont start. after backing into a parking spot?

check for fuel pump operation.have someone turn ignition on while you go to rear of car where fuel tank is to listen for fuel pump operation.if not.check fuse and relay.if you hear fuel pump .check ignition system to make sure engine is getting spark.

Posted on Jun 06, 2009

  • 297 Answers

SOURCE: What is a service A for 2002 mercedes c240?

Their are different kind of services, the more you drive, the more and deeper service is required ! get your self a owners manual, all required service intervals should be listed. If this is your question ?

Posted on Aug 11, 2009

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---
Reset Procedure

NOTE: This information applies to a Vehicle Theft Security System (VTSS) that was armed when the battery was disconnected and reconnected.

When the armed VTSS senses that the battery has been disconnected and reconnected, it enters its power-up mode. In the power-up mode the alarm system remains armed following a battery failure or disconnect. If the VTSS was armed prior to a battery disconnect or failure, the system will have to be actively or passively disarmed following a battery reconnection.

The power-up mode will also apply if the battery goes dead while the system is armed and battery jump-starting is attempted. The engine no-run feature will prevent the engine from starting until the alarm system has been actively or passively disarmed.

Passive disarming of the Vehicle Theft Security System (VTSS) occurs when the vehicle is unlocked using the key to unlock either front door or the liftgate. Active disarming of the VTSS occurs when the vehicle is unlocked by depressing the Unlock button of the Remote Keyless Entry (RKE) transmitter.

Once the alarm has been activated (horn sounding, lights flashing, and the engine no-run feature), either disarming method will deactivate the alarm.

Depressing the Panic button (if equipped) on the RKE transmitter will also disarm the VTSS, but the horn will sound and the lights will flash for about three minutes as part of the Panic feature. The horn and lights can be stopped by pressing any of the RKE transmitter's buttons or driving the vehicle above 15 mph.

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Hi, The battery has suddenly drained on my 1999 T Reg Mercedes C Class Estate. Yesterday the horn suddenly sounded for no reason and would not stop....then it stopped on it's own. This morning, no power in...


According to the Mercedes forum, you are not alone, the alarm system goes off at random, it has something to do with the tow button, disabling the horn doesn't stop the alarm and the lights keep flashing. But the horn is quieted. I would trash the alarm system, or pay the dealer to mess with it, which is usually an expensive joke. You have insurance on the car, let them steal it. I stopped worrying about my bike, I leave the key in it. Nobody touches it. Before I couldn't leave site of it. Now, I don't care. Let them have it, I'll get a new one, Anyway, check out mercedes forum.

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2004 mercedes c240 alarm sounds for no apparent reason


Hi, You need to replace the alarm siren. It is also a module. It is located in the right front fender well. The reason they go bad is because they are located in a place where they get wet.

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98 a6 alarm system keeps going off in middle of night, i have disconnected horn in boot for system but lights are still flashing. what is the easiesrt way to disconnect them from the alarm system


There will be water in the door microswitches, for the central locking.

This caused the alarms to activate when locked.

remove door panels on both front doors, you will see a little electrical switch near the door lock. remove and check for water ingress.

TL

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How can I reset my Factory Alarm on my Jeep it wont run


Alarm Module Reset Procedure
NOTE: This information applies to a Vehicle Theft Security System (VTSS) that was armed when the battery was disconnected and reconnected.
When the armed VTSS senses that the battery has been disconnected and reconnected, it enters its power-up mode. In the power-up mode the alarm system remains armed following a battery failure or disconnect. If the VTSS was armed prior to a battery disconnect or failure, the system will have to be actively or passively disarmed following a battery reconnection.
The power-up mode will also apply if the battery goes dead while the system is armed and battery jump-starting is attempted. The engine no-run feature will prevent the engine from starting until the alarm system has been actively or passively disarmed.
Passive disarming of the Vehicle Theft Security System (VTSS) occurs when the vehicle is unlocked using the key to unlock either front door or the lift gate. Active disarming of the VTSS occurs when the vehicle is unlocked by depressing the Unlock button of the Remote Keyless Entry (RKE) transmitter.
Once the alarm has been activated (horn sounding, lights flashing, and the engine no-run feature), either disarming method will deactivate the alarm.
Depressing the Panic button (if equipped) on the RKE transmitter will also disarm the VTSS, but the horn will sound and the lights will flash for about three minutes as part of the Panic feature. The horn and lights can be stopped by pressing any of the RKE transmitter's buttons or driving the vehicle above 15 mph.

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