ml430 alarm sounding intermittently for no obvious reason

Asked by May 11, 2017 at 08:17 AM about the 2000 Mercedes-Benz M-Class ML 430 4MATIC

Question type: Maintenance & Repair

Have a 2000 reg ML430.  Experiencing issues with the alarm. Goes off intermittently for no obvious reason - seems to happen every few hours - even does it when driving.  Been having some issues with central locking but they have been fixed by a replacement switch being installed BUT this alarm problem has been going on for a while.  In the past we had found that the alarm would not sound if we locked the car using the central locking rather than the key fob, but this now seems to make no difference (since we had the central locking fixed that is). Lights dont flash when alarm sounds.  We are probably going to have to take back to the garage BUT wondered if there could be any obvious (and well known) causes -for example, does the battery need replacing on the alarm system? Is it a door sensor perhaps? Any suggestions would be helpful so either we can fix it OR we can at least point the garage in the right direction (and so save potentially on a lot of labour costs)

1 Answer


On most MB's after 1995 there is a code for the alarm system that needs to be reset (usually by a licensed MB shop, or the dealer). This will eliminate the issue and they can also recode the fob so that it works the way its supposed to. Best of luck!

1 of 1 people found this helpful.

Your Answer

Mercedes-Benz M-Class Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used BMW X5
310 Great Deals out of 17,112 listings starting at $2,991
Used Mercedes-Benz E-Class
428 Great Deals out of 20,649 listings starting at $1,999
Used Mercedes-Benz C-Class
590 Great Deals out of 25,420 listings starting at $1,950
Used Mercedes-Benz S-Class
123 Great Deals out of 7,248 listings starting at $1,980
Used Mercedes-Benz G-Class
6 Great Deals out of 1,216 listings starting at $24,950
Used Land Rover Range Rover
85 Great Deals out of 4,644 listings starting at $2,850
Used BMW 5 Series
386 Great Deals out of 16,101 listings starting at $1,650

Used Cars For Sale

2015 Mercedes-Benz M-Class For Sale
76 Great Deals out of 1,908 listings starting at $21,495
2014 Mercedes-Benz M-Class For Sale
39 Great Deals out of 748 listings starting at $18,888
2013 Mercedes-Benz M-Class For Sale
22 Great Deals out of 405 listings starting at $15,988
2012 Mercedes-Benz M-Class For Sale
23 Great Deals out of 482 listings starting at $16,000
2011 Mercedes-Benz M-Class For Sale
14 Great Deals out of 416 listings starting at $8,400

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.