C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI

2009 C350 Battery Drain

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Sep 6, 2024 | 03:17 PM
  #1  
r0cowboy's Avatar
Thread Starter
Newbie
 
Joined: Sep 2024
Posts: 9
Likes: 0
From: Austin TX
2009 Mercedes Benz C350
2009 C350 Battery Drain

My 2009 C350 has a slow battery drain, around 200mA on sleeping mode. Tried voltage drop method and no fuse shows any voltage drop, all go to ZERO that is.
Any idea would be greatly appreciated, at this point! Also, anywhere that I can find wiring diagram, to at least check what amperage goes to what fuse box.
Speaking about fuse box, my inside cabin one has only two (2) fuses 116 and 130. pretty sure 116 is driver seat module, but no idea of 130 and there's voltage there.

TY!
Reply
Old Sep 6, 2024 | 03:39 PM
  #2  
TimC300's Avatar
MBWorld Fanatic!
Community Builder
Liked
Loved
Community Favorite
 
Joined: Aug 2023
Posts: 3,743
Likes: 1,137
From: MA Coast
W204 2010 C300 4matic Sport M272
Have you scanned the vehicve with a Mercedes specific obd scanner? It may tell you the fault.

Heres a link to the fuse box diagrams: https://fuse-box.info/mercedes-benz/...uses-and-relay. Says 130 is "Spare".

Reply
Old Sep 6, 2024 | 04:05 PM
  #3  
r0cowboy's Avatar
Thread Starter
Newbie
 
Joined: Sep 2024
Posts: 9
Likes: 0
From: Austin TX
2009 Mercedes Benz C350
I did scanned and have a front left lamp error, sort of actuator not programmed. I think is lingering after disconnectinf/charging the battery .
Attached fusebox pic.


E=TimC300;9028621]Have you scanned the vehicve with a Mercedes specific obd scanner? It may tell you the fault.

Heres a link to the fuse box diagrams: https://fuse-box.info/mercedes-benz/...uses-and-relay. Says 130 is "Spare".[/QUOTE]
Reply

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


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


All times are GMT -4. The time now is 10:33 AM.

story-0
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know

Slideshow: Mercedes-AMG's new electric GT 4-Door Coupe trades combustion for software, synthetic noise, and more than 1,100 horsepower.

By Verdad Gallardo | 2026-05-20 20:08:15


VIEW MORE
story-1
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-2
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-3
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-4
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-5
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-6
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-7
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-8
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-9
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE