R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

Hard starting issue

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Oct 1, 2010 | 02:21 PM
  #1  
termite's Avatar
Thread Starter
Member
15 Year Member
 
Joined: Oct 2008
Posts: 141
Likes: 11
From: Mt. Sinai, NY
2013 E350 wagon cuprite brown; sold:2014 ML63; R500 Saks Edition; R500; more W124s than I can count
Hard starting issue

In the last three days I have been having a hard start issue on my '06 R500 w/ 53k miles. First thing in the morning it will not start on the first crank. The starter goes but the engine doesn't start. The second attempt always starts the car. I tried both keys [keyless go] and it does not make a difference. It only happens after the car has sat for a long period of time and it so far has always caught on the second attempt. I searched the archives and haven't found any similar posts. The car has been totally reliable otherwise and maintenance is all current...
Reply
Old Oct 1, 2010 | 08:49 PM
  #2  
fstshrk's Avatar
Member
 
Joined: Apr 2008
Posts: 199
Likes: 0
2007 R320 CDI, 2010 FJ Cruiser, CTS-V
Originally Posted by termite
In the last three days I have been having a hard start issue on my '06 R500 w/ 53k miles. First thing in the morning it will not start on the first crank. The starter goes but the engine doesn't start. The second attempt always starts the car. I tried both keys [keyless go] and it does not make a difference. It only happens after the car has sat for a long period of time and it so far has always caught on the second attempt. I searched the archives and haven't found any similar posts. The car has been totally reliable otherwise and maintenance is all current...
I had a similar problem with a VW Passat. It turned out that fuel line check-valve was broken and was letting fuel pressure to drop and it required a second attempt to get it working.

I would take it to a mechanic, leave it overnight and have them figure this out.
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 04:13 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke

Slideshow: The 2027 update adds a fully digital steering system, revised styling, and potential charging upgrades as the company looks to revive interest in the luxury EV.

By Verdad Gallardo | 2026-04-04 10:24:38


VIEW MORE