Indicator lights.

[plbrownimperial]

My C200 Kompressor (2002) has recently developed a fault: when I lock the doors with the key, all the indicator lights continue to flash. Can anyone tell me why?

 

[KillerHERTZ]

Possibly the alarm battery is about to fail and you will need a new unit.

Can be replaced DIY.

 

[Dash1]

Hi plbrownimperial,

As KillerHERTZ has already stated above, it sounds very much like your alarm system is in its infancy of imminent failure. Classic symptoms of the circuit board being contaminated by leakage from the internal NiMH battery. Unfortunately, like every type of secondary battery, they eventually deteriorate and leak over time, and in the process, damage the PCB within the alarm unit.

You could possibly wait and see if it deteriorates any further (very likely it will) or have it checked out by a competent auto electrician. Alternatively, disconnect the electrical plug yourself at the rear of the alarm unit and then try and lock the vehicle again, if the indicators don’t flash, then you have your answer.

I had the alarm unit replaced on my CL last year for very similar reasons – if unchanged, then over the subsequent coming months the alarm will start to go off on its own.

Best Regards,

Dash1

 

[Benza750]

As above

Most Likely to be the alarm siren this can be confirmed by a star diagnostic test.

Me w alarm sirens need to be programmed after replacement also via a star machine.
They need to have there national version programmed so that the alarm is not audible when you lock & unlock the vehicle.

 

[Ade Vic]

If u are very carefull to get siren apart u can change the internal battery in the siren. Did it on my clk



. Battery is a 7.2v 150 mah

 

[plbrownimperial]

Dear all,

Many thanks for your replies. How do I locate the Siren?

 

[Dash1]

Dear all,

Many thanks for your replies. How do I locate the Siren?

Hi plbrownimperial,

Please find attached picture below.

Regards,

Dash1

 

[Benza750]

I am sure it's like in the above picture but it is on the passenger side

 

[nigel cross]

I am sure it's like in the above picture but it is on the passenger side

I think you are right too

 

[plbrownimperial]

could it be located on the drivers side. Just taken the cover off on the passenger side and the only thing I can see is the bottom of the washer bottle

 

[KillerHERTZ]

Its the rear of the wheel arch not behind the front bumper. you will need to take off all the wheel arch lining to access it

 

[KillerHERTZ]

Photo of mine:

The alarm holder was rusty, so I Krust'ed it then Hammerited it

 

[plbrownimperial]

Many thanks, will have another go at the weekend.