MBWorld.org Forums

E-Class (W212) 2010 - 2016: E 350, E 550
Sponsored by:
Sponsored by: CARiD

My 2012 E350 won't start

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Feb 4, 2017 | 07:22 PM
Share
  #26  
MelvinC's Avatar
MelvinC
Thread Starter
Junior Member
 
Joined: Jan 2017
Posts: 24
Likes: 1
2012 Mercedes E350
Originally Posted by SoCal208
MB W212 model year 2012 DO NOT HAVE auxiliary battery. Only ONE big old 12v battery (front passenger side, close to the firewall). Alternator may be your problem. Until model year 2014 > up (with stop & start in traffic that need an auxiliary battery). I can not locate any 2nd in my car, my mechanic told me my car had ONLY 1 battery.
ok so I diagnosed the car. It gave me a code p0356 stating ignition coil failure / secondary circuit. Any suggestions or thoughts on about this?
Reply
0
Old Feb 4, 2017 | 07:26 PM
Share
  #27  
RA72825's Avatar
RA72825
Banned
 
Joined: Oct 2005
Posts: 4,957
Likes: 1,640
No code for anything else? You have 6 coils and now you need to find the bad one.
Reply
0
Old Feb 4, 2017 | 08:41 PM
Share
  #28  
cetialpha5's Avatar
cetialpha5
MBWorld Fanatic!
10 Year Member
 
Joined: Feb 2014
Posts: 6,190
Likes: 1,550
From: MA
2008 E350 4Matic, 2011 E350 4matic
Originally Posted by SoCal208
MB W212 model year 2012 DO NOT HAVE auxiliary battery. Only ONE big old 12v battery (front passenger side, close to the firewall). Alternator may be your problem. Until model year 2014 > up (with stop & start in traffic that need an auxiliary battery). I can not locate any 2nd in my car, my mechanic told me my car had ONLY 1 battery.
Did you follow the link posted earlier? It's in the dash. You have to open the door to access it. Here's a guy who changed his on his 2012 W212. Check out the pictures in the post. Maybe it's time for a new mechanic.

https://mbworld.org/forums/e-class-w...ml#post6930867
Reply
0
Old Feb 4, 2017 | 11:35 PM
Share
  #29  
MelvinC's Avatar
MelvinC
Thread Starter
Junior Member
 
Joined: Jan 2017
Posts: 24
Likes: 1
2012 Mercedes E350
Originally Posted by LILBENZ230
A fuel pump will not cause the red battery warning in the cluster.

nope just that. What do you think ?
Reply
0
Old Feb 4, 2017 | 11:38 PM
Share
  #30  
MelvinC's Avatar
MelvinC
Thread Starter
Junior Member
 
Joined: Jan 2017
Posts: 24
Likes: 1
2012 Mercedes E350
Originally Posted by KEY08
No code for anything else? You have 6 coils and now you need to find the bad one.
nope that's the only code for I got . I diagnosed it. What came out was that code for the ignition coil only? What do you think? Would that be the problem ?
Reply
0
Old Feb 5, 2017 | 08:11 AM
Share
  #31  
LILBENZ230's Avatar
LILBENZ230
MBWorld Fanatic!
 
Joined: Jul 2008
Posts: 8,384
Likes: 800
2019 G70 6MT & 2022 Ford Maverick XL
Originally Posted by MelvinC
So what do you think it is ?
I think it is most likely an alternator issue given the warnings you are getting. Until you get that sorted, I would not pay much attention to other warnings as the cars can act strangely when they're having voltage issues.
Reply
0
Back to Subforum
E-Class (W212)
View Next Unread
Not impressed with MB service

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


You have already rated this thread Rating: Thread Rating: 0 votes, average.
Show Printable Version
Email this Page

Advanced Search

All times are GMT -4. The time now is 11:23 AM.

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