C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

Help - All of a sudden making loud chirping noise when off

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 07-10-2019, 05:08 PM
  #1  
Junior Member
Thread Starter
 
wes27hoya's Avatar
 
Join Date: Oct 2013
Posts: 15
Received 0 Likes on 0 Posts
C230 Coupe
Help - All of a sudden making loud chirping noise when off

I've had my car stored at my father in law's for the past 6 weeks while they retrofit my building (and parking space). He started and moved it about a week ago and today went out to find it making this noise out of the blue with the car off.

The key fob won't open the door so I told him to get in with the emergency metal key on it and he did and then the fob won't start the car. He started it last week to move it just fine. He popped the hood and said it sounds like it's coming from somewhere down below.

Any idea what this could be? Sounds kind of like a constant cricket on the video attached (and when I was on the phone with him). So weird!
Attached Files
File Type: mov
IMG_6991.MOV (1.39 MB, 29 views)

Last edited by wes27hoya; 07-10-2019 at 05:14 PM.
Old 07-10-2019, 05:11 PM
  #2  
Junior Member
Thread Starter
 
wes27hoya's Avatar
 
Join Date: Oct 2013
Posts: 15
Received 0 Likes on 0 Posts
C230 Coupe
I uploaded it to Youtube also if that's easier:

Old 07-12-2019, 08:58 PM
  #3  
Member
 
5by5's Avatar
 
Join Date: Mar 2019
Posts: 150
Received 23 Likes on 22 Posts
2011 C300 Sport 4matic, 2005 C240 4matic, 2003 C230K Sport, 1999 C230K Sport, 1969 220D (first car!)
Replace the battery in the key fob.

The manual key may allow entry but not disarm the security system.

i ran into a similar issue with a car that I considered purchasing. It had sat for a long time. Both the main battery and the key fob battery were dead, A jump got the car running but the alarm continued to sound until the fob battery was replaced.

(Btw, I didn’t buy the car. It was badly neglected and the seller didn’t provide much confidence.)
5by5
Old 07-30-2019, 04:56 PM
  #4  
Junior Member
Thread Starter
 
wes27hoya's Avatar
 
Join Date: Oct 2013
Posts: 15
Received 0 Likes on 0 Posts
C230 Coupe
Originally Posted by 5by5
Replace the battery in the key fob.

The manual key may allow entry but not disarm the security system.

i ran into a similar issue with a car that I considered purchasing. It had sat for a long time. Both the main battery and the key fob battery were dead, A jump got the car running but the alarm continued to sound until the fob battery was replaced.

(Btw, I didn’t buy the car. It was badly neglected and the seller didn’t provide much confidence.)
5by5

We shall see if that's it. I'll try it if it occurs again. I think the main car battery may have been just wearing down, as it was parked for a couple of weeks without starting. My father-in-law charged it with a portable charger and it stopped and the car started and the key fob started working again. Hoping it was just that
but my mechanic I've seen said the car alarm has a separate battery so we shall see.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Help - All of a sudden making loud chirping noise when off



All times are GMT -4. The time now is 12:04 AM.