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

Cranks but won't start. No error code

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Aug 8, 2019 | 09:30 PM
  #1  
Kyron Foo's Avatar
Thread Starter
Newbie
 
Joined: Aug 2019
Posts: 1
Likes: 0
2008 e350
Cranks but won't start. No error code

Hi everyone,

I have a 2008 e350. It cranks but will not start. When we plug in a diagnostic tool, it doesn't show any error messages.

So far we have tried replacing the crankshaft position sensor and are now looking at the fuel pump relay as a possible suspect.

Putting a few drops of gas in the air intake will start the engine.

Also, if the car is cold, such as in the mornings, the engine will start without a problem.
Reply
Old Aug 9, 2019 | 12:54 AM
  #2  
TeeEl's Avatar
Senior Member
 
Joined: Nov 2018
Posts: 443
Likes: 69
From: California
2013 E550 4MATIC - P1, P2, SPORT
I know very little about cars... but could that be a MAF sensor issue? Since colder air is more dense, it allows "more" in in the morning.
Reply
Old Aug 9, 2019 | 09:08 PM
  #3  
TeeEl's Avatar
Senior Member
 
Joined: Nov 2018
Posts: 443
Likes: 69
From: California
2013 E550 4MATIC - P1, P2, SPORT
Also, you should consider changing the title to "Car cranks but only starts when it's cold." The more descriptive the better. Maybe someone else has had a similar issue.
Reply
Old Sep 25, 2019 | 07:23 PM
  #4  
mpvalen's Avatar
Newbie
 
Joined: Apr 2008
Posts: 1
Likes: 0
2008 C300 Sport
I hear there is a TSB for the 2008's to change 4 relays under the hood. Bad batch of relays suspect.
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 07:34 AM.

story-0
New Mercedes-AMG SUVs Arrive With NEW V8 Engine: 12 Things You Need to Know

Slideshow: Mercedes-AMG's updated GLE 63 S and GLS 63 bring a new-generation V8, subtle design revisions, and familiar supercar-rivaling performance figures.

By Verdad Gallardo | 2026-06-17 12:52:51


VIEW MORE
story-1
8 Oddball Mercedes Ideas That Actually Made it to Production

Slideshow: Mercedes has never been afraid to experiment, and some of its strangest ideas turned out to be surprisingly successful.

By Verdad Gallardo | 2026-06-10 17:43:40


VIEW MORE
story-2
Dubai Tuner Gives the Mercedes G-Class An Entirely New Look

Sideshow: A Middle Eastern tuner has transformed the Mercedes-AMG G 63 into an open-top special, replacing nearly every exterior panel in the process.

By Verdad Gallardo | 2026-06-10 15:29:50


VIEW MORE
story-3
Six Gift Ideas Your AMG Loving Dad or Grad Will Cherish

Slideshow: Six gift ideas your AMG loving dad or grad will cherish.

By | 2026-06-03 17:26:18


VIEW MORE
story-4
7 Craziest Things AMG Gas Ever Built

Slideshow: Sometimes AMG builds fast sedans. Other times, it builds twin-turbo V12 land missiles and six-wheeled off-road monsters.

By Verdad Gallardo | 2026-05-26 17:59:58


VIEW MORE
story-5
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-6
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-7
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-8
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-9
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