high idle - Bluetec
Thread Starter
MBWorld Fanatic!
Joined: Nov 2001
Posts: 5,640
Likes: 11
From: GMT -8 hours
Mercedes-Benz
high idle - Bluetec
It's been quite hot this week (upper 90s) and I've noticed my bluetec has been idling around 800-900 RPM. At a light it creeps forward pretty fast, it usually idles around 550-600rpm. Has anyone else experienced this?
MBWorld Fanatic!
Joined: Feb 2007
Posts: 2,550
Likes: 745
From: Cary, NC
2024 AMG EQE SUV , 2021 E63S Wagon - gone, 2018 E63S Sedan - gone
The idle is raised when the outside temperature is above 87 degrees and the A/C is engaged. Turn off the A/C when this happens and watch the idle return to normal. It seems to be working as designed.
Super Member
Joined: Jan 2012
Posts: 603
Likes: 8
From: Maryland
2022 E450 Prior:2021 S580 2012 E350BT, 2013 GL350BT, 2009 ML320BT, 2006 E320CDI, 1987 260E
Mine has the same symptom every so often when it's going through a regen cycle. Sometimes they seem to take forever, as in notice it, drive 20mi on the highway and it's still going when I get home.
I do love the 5500rpm idle. Our 2009 ML320 always seems to be idling at like 7000+ plus and don't notice the regen at all. I assume that's to spec but never really compared it against another?
I do love the 5500rpm idle. Our 2009 ML320 always seems to be idling at like 7000+ plus and don't notice the regen at all. I assume that's to spec but never really compared it against another?
Senior Member
Joined: Nov 2011
Posts: 333
Likes: 1
From: Sacramento, CA
E350 BT
Thread Starter
MBWorld Fanatic!
Joined: Nov 2001
Posts: 5,640
Likes: 11
From: GMT -8 hours
Mercedes-Benz
Yup, this morning it hit 87 and like clockwork the idle went up to 800. Pressed the A/C button and it stayed at 800... but cold air continued to come from the vents. When I turned the entire system off the idle then dropped.
Junior Member
Joined: Nov 2013
Posts: 20
Likes: 0
2011 E350 Bluetech
I purchased a CPO 2011 E350 bluetec in November 2013. Now that our Florida weather is warming up, I have noticed the same thing. The car has been back to Benz three times and twice they applied software updates, this time to the screen module. Less than two hundred miles later, it is doing it again. Funny thing is, I don't think it is a regency issue as I don't smell the fumes or hear the metallic crackling as the exhaust system cools down.MB has said nothing about the rpm raising up when the account is on yet, frequently turning off the account and giving the car two quick revs brings the girls back down from 700 to 550. The only time it doesnt seem to drop the rpm is when the car is in a real regency cycle. How come Benz doesn't have a clue?
Last edited by tdisedanman; Jun 6, 2014 at 10:18 PM.
Trending Topics
Junior Member
Joined: Nov 2013
Posts: 20
Likes: 0
2011 E350 Bluetech
I purchased a CPO 2011 E350 bluetec in November 2013. Now that our Florida weather is warming up, I have noticed the same thing. The car has been back to Benz three times and twice they applied software updates, this time to the screen module. Less than two hundred miles later, it is doing it again. Funny thing is, I don't think it is a regency issue as I don't smell the fumes or hear the metallic crackling as the exhaust system cools down.MB has said nothing about the rpm raising up when the account is on yet, frequently turning off the account and giving the car two quick revs brings the girls back down from 700 to 550. The only time it doesnt seem to drop the rpm is when the car is in a real regency cycle. How come Benz doesn't have a clue?
MB World Stories
The Best of Mercedes & AMG
7 Craziest Things AMG Gas Ever Built
Verdad Gallardo
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
Junior Member
Joined: Nov 2013
Posts: 20
Likes: 0
2011 E350 Bluetech
Newbie
Joined: Jan 2018
Posts: 1
Likes: 0
E350 bluetec 2011
800 idle on my bluetec at idle
high idle more command during high temperatures. I have a e350 2011 bluetec v6, 120,000 miles but today after 60 days of normal ideling at 68 degrees the emgine idled at 800 rpms.I turned the engine off and back on and the idle drops to 600.when coming to a red light I lower the transmission to neutral when the idle is 800, it still keeps running at 800. I know the extra pressure on the transmission can not be good.
Made appointment with dealer, they have no clue.
Now what do I do?..
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,225
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
high idle more command during high temperatures. I have a e350 2011 bluetec v6, 120,000 miles but today after 60 days of normal ideling at 68 degrees the emgine idled at 800 rpms.I turned the engine off and back on and the idle drops to 600.when coming to a red light I lower the transmission to neutral when the idle is 800, it still keeps running at 800. I know the extra pressure on the transmission can not be good.
Made appointment with dealer, they have no clue.
Now what do I do?..
Made appointment with dealer, they have no clue.
Now what do I do?..
Your car has DPF who runs regeneration process every few hundred miles. That raise rpm when happens
Newbie
Joined: Jul 2021
Posts: 9
Likes: 0
From: Bronx
ML350 2010 bluetec
I am having same issue.
Hi all, I got same issue with my ml350 bluetec, did you had the chance to fix the high rpm problem? If yes, what did you do? Thanks
Last edited by Liro; Jul 18, 2021 at 04:10 PM.
Newbie
Joined: Aug 2019
Posts: 6
Likes: 0
CLK63 AMG
Did youi get a reply? Mine is idling at 800 rpm 600 with the air off
