Please help! 2003 mercedes c320 coupe electrical shutdown!

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Aug 15, 2014 | 07:16 PM
  #1  
freshest10's Avatar
Thread Starter
Newbie
 
Joined: Aug 2014
Posts: 3
Likes: 0
2003 Mercedes C320 Coupe
Exclamation Please help! 2003 mercedes c320 coupe electrical shutdown!

it all started with wrong battery terminal removal **long story** (positive before negative)
ever since that moment i have been having issues with my complete electrical system. the engine starts normal but then instrument cluster does not change and the radiator fan works at really high speed making a loud noise.

things that dont work.

1. Windows
2. Horn
3. Windshield wiper, signal indicator.....
4. the AC Dont work
5. almost everything electrical...except hazards and inner lights

I went to an independent Mercedes specialist and i was told there scanner couldn't communicate with my car and i was charged $210 for the 3 days of no result my car spent with them. Am scared of going to Mercedes dealer because $$$. I read some forums and some said maybe my rear SAM unit has blown out, I searched on eBay and found a used rear SAM unit for $125 bought it and it will deliver by Tuesday and i have my fingers crossed . PLEASE GUYS its my first time posting on here and i really don't know much about Mercedes. any ideas as to whats causing the problem and what i need to do.
Reply
Old Aug 15, 2014 | 08:25 PM
  #2  
capt_paul's Avatar
MBWorld Fanatic!
20 Year Member
Photogenic
 
Joined: Oct 2004
Posts: 1,305
Likes: 37
From: Las Vegas, Nevada
2013 C350 Coupe, 2005 C230K Kleemann Sedan, 2013 GLK350 4matic
Post this in the W203 forum. This one is for 2012+ C-Class Coupes
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 03:21 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE