Alarm Chirp only on unlock - MBWorld.org Forums

Mar 7, 2015 | 02:08 AM

jpman

Thread Starter

Senior Member

Joined: Feb 2010

Posts: 250

Likes: 15

From: Miami, FL

2009 E63

Alarm Chirp only on unlock

Hello, I have an 07 c230 that was chirping three times on lock and one time on unlock. Now it only chirps on unlock but not on lock. The battery did run flat the other day, wondering if this might have something to do with it? Could it be a door sensor that is not registering and does not activate it?

Thanks guys!

Mar 7, 2015 | 11:57 AM

pcy

MBWorld Fanatic!

Joined: Mar 2004

Posts: 1,175

Likes: 24

From: Boston, MA

'14 ML350, '13 C220 CDI, '07 C280, '98 ML320

After locking the car with the key, try opening all 4 doors and the trunk. You'll likely find one of them is not locking.

Mar 7, 2015 | 12:13 PM

jpman

Thread Starter

Senior Member

Joined: Feb 2010

Posts: 250

Likes: 15

From: Miami, FL

2009 E63

Just checked that. All doors and the trunk are locking :/. Any other ideas?

Mar 7, 2015 | 12:23 PM

samaritrey

Super Moderator

Joined: Mar 2007

Posts: 5,295

Likes: 22

From: VA

THE C350

The door sensors are known to get damaged by seat belts and the door would still lock unless it is a drivers door. Driving the car you would get a noticed though that the door is open i would think.

Mar 7, 2015 | 03:54 PM

RWDlifer

Super Member

Joined: Oct 2013

Posts: 527

Likes: 20

From: Carolinas

2005 C230K SS

When it comes to these cars I don't believe in coincidences. If the battery ran flat then something went askew, either from the dead battery or when power was re-established. Sometimes you have to disconnect the battery and then reconnect to clear gremlins that pop up when you connect the battery!

Mar 7, 2015 | 07:51 PM

jpman

Thread Starter

Senior Member

Joined: Feb 2010

Posts: 250

Likes: 15

From: Miami, FL

2009 E63

Fixed it. It ended up being the battery. I took it to an Indy to check codes via star and it was showing 11.8 volts. Odly enough on the battery with a meter it would read 12.6 and sometimes 11.8. Went to the dealer picked one up for $130 and she's back to normal. On a side note, there is a rubber grommet that the battery vent hose goes into that fell downwards. Would anyone happen to know the part number for this?

Mar 7, 2015 | 08:57 PM

RWDlifer

Super Member

Joined: Oct 2013

Posts: 527

Likes: 20

From: Carolinas

2005 C230K SS

Told ya..
Glad it's fixed. On a side note, I too just replaced my battery this past January, it was showing 12.2 V but could barely crank the car. It was the original battery with a manufacture date of 51/04!

Last edited by RWDlifer; Mar 7, 2015 at 09:00 PM.

Trending Topics

The new 2027 S-Class: The Walkaround

293

20.1k
Software Update 2.6.1 and Rough Ride

29

519
Anyone looked at the new Lexus LX vs GLS

161

8.0k
A GTR has landed in my garage!

22

388
OEM Windshield Shortage

17

277

Mar 9, 2015 | 04:33 PM

jpman

Thread Starter

Senior Member

Joined: Feb 2010

Posts: 250

Likes: 15

From: Miami, FL

2009 E63

Quote:

Originally Posted by RWDlifer

You were dead on. Thanks for the help. The one on my car was also the original manufacturer battery. Id say 7 years is a good run.

Now on to another task, that grommet. It is the one that goes on the body of the car. The vent tube goes within the grommet. It seems to have fallen when I was replacing the vent tube, I'm thinking if I remove the rear fender liner on the front quarter panel it might be somewhere around there. On the star I can't find the part, anyone care to point me in the right direction?