w203 (c180) 2003 Lights flashing?!

[Continental]

Good Afternoon MB Club members, hope you are all well.

I have a problem in that the lights of my c class start flashing sometimes for apparantly no reason at all (after I lock it and leave it). The alarm does not sound but the lights flash... to remedy the situation I have to unlock it, (then the alarm sounds) and I have to re-lock it again... it then seems to be ok. It does not happen all the time...but I've noticed it a few times over the last couple of weeks and have tried to search and find out what it can be but have been unsuccessful. Could it be a rusty siren?! or dying battery?! Or something completely different... I really am stuck!

The doors all open and lock fine...I had 'machine gun'/bouncing front passenger button about 6 months ago ... but I had a new door lock fitted by MB when they did the B service on the car last Oct and that sorted that issue out fine.

Any help would really be much appreciated, thanks.

 

[H13BS M]

ahh that actually is suppose to do that if you leave the car without looking it.Its suppose to remind you that uve left the car unoccupied but without looking it!!

 

[H13BS M]

i mean when you don't lock it.Also when i mean flashing, its like a strobe flash then appose to alrm light flashing!!

 

[Continental]

Thank you very much for your response.

Ok what you are saying makes sense I think...I'm loosing it that must mean!

I could swear I locked it because why then when I unlock does it start sounding the alarm?!

Also do you know how long it takes for this to start happening?

I thought that after a while if you forget to lock it just locks itself...Or is that if you unlock it and don't open the door within about half a minute I think?

Also I think I understand what you mean by strobe flashing (it should be faster) but the pace of the flashing is the same as alarm flashing...if that makes sense!

 

[kwakdonut]

I thought that after a while if you forget to lock it just locks itself...Or is that if you unlock it and don't open the door within about half a minute I think?

No, you're correct. The vehicle will re-lock itself if you unlock (from locked) but do not open any door. Normally about 30 seconds later - I believe this is a standard Thatcham requirement.

 

[Continental]

Ok so today I parked up at work all day nothing...

Then As I'm walking to the car at the end of the day I see it flashing! What is going on. Please help and I 100% locked it and all the buttons were down. I tried opening the boot and it didn't open. I had to unlock it a few times with the remote (first time alram sounded) then after a few times unlocking/locking it stopped! Pls Pls help!

 

[crockers]

which lights are you meaning ? Hazards? Headlights? I am assuming you mean the hazard/indicators.

 

[Continental]

All the exterior lights basically I think yes hazards as well!

 

[Continental]

No one able to suggest anything for me here... : (

 

[Continental]

Ok NOW the alarm just went off (it's just the hazards/indicators flashing I established) for no reason I'm quite sure...HELP!!! Please guys!!!

 

[dnoyce]

I had this problem with my (now extinct) W202 some years back. The hazards/indicators would flash intermittently, but fortunately not the alarm. I just let it get on with it and eventually it stopped. Lasted about six months and that was it.
David