How do you turn off the alarm on a Mercedes A Class?
Super Moderator Pressing ‘lock’ twice on the key disables Keyless Entry, not the interior movement sensor. (Sounds like your larger dog just lay down and went to sleep, while your smaller dog climbs all over the car hence setting the alarm off).
Why does my Mercedes Benz alarm keep going off?
Had same problem with my 2000 SLK230… Here’s an excerpt from the invoice for the warranty repair on my 2000 SLK230. “Customer states alarm will go off whether car is locked or unlocked. Found PSE pump & anti-tow sensor faulty test.
Where is the siren on a Mercedes Benz?
The siren mated to the car alarm has its own batteries. Located under the driver’s side fender, the siren sounds every time the alarm activates. If one or both of the batteries goes bad, they can leak and reek havoc on the siren’s components.
What kind of battery does a Mercedes Benz alarm need?
It’s a 12 volt (motorcycle size battery), and costs about $140-$150 from the dealership. My existing battery only had a 8volt charge, and would work during the day, but drain and activate the alarm at night. After installation, the alarm works, the keyless entry works, the Radio picks up channels better, and the “Battery” warning went away.
What do you do when your car alarm goes off?
Find a switch on the overhead console that shows a car being lifted from the rear. Remove your key from the ignition, and then press this switch. When the light comes on, the alarm system is deactivated. To re-activate the system, unlock the car.
When does the car alarm go off on a Mercedes?
Mercedes alarm may go off even when no one is trying to steal the car. We have seen many cases when a Mercedes alarm (siren) goes off during the night while the car is parked, when you try to lock the car or during extremely cold weather. This past week we worked on a Mercedes-Benz where the alarm would go off randomly in the middle of the night.
Why does my car alarm go off in the middle of the night?
The battery in your alarm siren can go bad causing alarm to go off. You lock the car doors and a few seconds later the car siren goes off for no apparent reason. Hazard lights start to flash. Or in the worst case scenario, the alarm goes off in the middle of the night Many cars including Mercedes-Benz have sires with build in batteries inside them.
What should I do if my car alarm keeps going off?
What I did was to check the battery after driving the car some distance. You should get I think at least 12.5 volts at that time. Then check it in about 6 hours and if not driven again after 12 hours. You should get very little drop. That’s the simplest test. My car had underhood battery connections and I checked it there. Hope that helps.
Why does the siren go off in a Mercedes Benz?
When the siren batteries fail, it can cause the alarm to go off. Change the siren batteries or replace the siren itself if found defective. In most cases, the siren is near the driver side wheel well. Check out this post on MBWorld to learn about a few cases with this exact problem. Newer Mercedes-Benz cars are equipped with both a Horn and Siren.