How do I break in my new CLS 550? - Mercedes-Benz Forum

LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 01-26-2008, 10:09 PM Thread Starter
BenzWorld Member
nycdude777's Avatar
Date registered: Jan 2008
Posts: 80
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
How do I break in my new CLS 550?


I have owned 3 brand new cars till now, first was an Acura 2.5 TL, then Acura 3.5 RL, and the latest was 2006 MB E350. I never really paid too much attention to the breaking it in part, and drove them hard. I get mixed opinions from everyone, including the dealer, on how to do it. Some say you have to drive it slow for the first 1000 miles, others say you can drive fast but not accelerate fast, others say don't switch gears too much, i.e. downshift, which i guess would fall under driving it hard category.

The thing about mercedes though is that the tranny has a chip that learns your driving style, and it does that in the first couple of hundred miles. When I got my E350, I did not drive it as hard as I did my previous cars, so yes, I wanted to sort of break it in, but I don't think I did it right. I think the fact htat I was driving is passively made the transmission LAG a little bit. I think the car figured I was a granny and it tuned itself for a passive driving mode. Thats just a suspicion.

Long story short, I am getting a new CLS 550 next week, and I want to get the most out of that car. What is the best way to break it in so that the engine gives me the most torque and the tranny responds as quickly as possible? How should I drive it at first?

Thanks a lot for you help!

nycdude777 is offline  
Sponsored Links
post #2 of 9 (permalink) Old 01-26-2008, 10:12 PM
BenzWorld Elite
asianml's Avatar
Date registered: Sep 2005
Location: Ann Arbor, Michigan
Posts: 11,243
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Take it easy during break-in. Afterward you can always do the "ecu reset" (do a search to find the instructions).

2002 Mercedes-Benz ML320 (sold)
2011 Chrysler Town & Country
2008 Toyota Camry Hybrid
2003 Yamaha V-Star 650 Classic
2002 Jaguar X-Type 2.5

asianml is offline  
post #3 of 9 (permalink) Old 01-28-2008, 07:45 AM
BenzWorld Elite
Date registered: May 2005
Vehicle: '07 GL320CDI
Location: Albuquerque
Posts: 5,070
Mentioned: 0 Post(s)
Quoted: 2 Post(s)
Follow instructions in owners manual

Kent Christensen
'07 GL320CDI
lkchris is offline  
post #4 of 9 (permalink) Old 01-28-2008, 08:45 AM
Lifetime Premium Member
MB-SV's Avatar
Date registered: Nov 2007
Location: overlooking Silicon Valley
Posts: 7,261
Mentioned: 0 Post(s)
Quoted: 77 Post(s)
Lifetime Premium Member
Yes the manual gives good directions on driving during the first 1000 miles of break-in. Instructions are better than most supplied by car makers.


2013 Mercedes C250 Sport package PLUS steel gray metallic/black
2007 Lexus IS350 Sport package smoky granite mica/gray (+F-Sport, etc.)
2010 Honda Civic GX (CNG) white/tan
MB-SV is offline  
post #5 of 9 (permalink) Old 01-28-2008, 08:49 AM
BenzWorld Junior Member
Date registered: Dec 2007
Vehicle: 2008 ML350 4matic EDIT10N black/macadamia/black, 2007 C230 white/ash
Location: dallas, tx
Posts: 20
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
why would you need to break into your car? Didn't they give you a key for it?

Sorry.......I couldn't resist.

Nice ride.
masoncop is offline  
post #6 of 9 (permalink) Old 01-28-2008, 02:03 PM
BenzWorld Member
Date registered: Dec 2006
Vehicle: 2010 ML 350; 2011 SL550
Location: San Francisco Bay Area
Posts: 90
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
The transmission software relearns your driving style very quickly.

At the end of whatever breakin period you follow, change to a more radical driving style and it will learn in less than 2 days
red308 is offline  
post #7 of 9 (permalink) Old 01-28-2008, 02:46 PM
Lifetime Premium Member
Musikmann's Avatar
Date registered: May 2006
Vehicle: 2001 E320 - Brilliant Silver/Ash: 107,000+
Location: West Virginia, USA
Posts: 17,193
Mentioned: 0 Post(s)
Quoted: 6 Post(s)
Lifetime Premium Member
Ditto to what your owner's manual tells you.

Mercedes Benz - Das beste oder nichts!
Musikmann is offline  
post #8 of 9 (permalink) Old 01-28-2008, 03:18 PM
BenzWorld Elite
dahappybanana's Avatar
Date registered: Jun 2005
Vehicle: 1990 300E, 2002 ML500
Location: Boone, NC
Posts: 1,379
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
The way of breaking in is don't go past half throttle, don't throttle down too fast, don't let your RPMs go over half your redline, don't tow. Do this for 1000 miles, then once you hit 1000 don't just go ape shit, take a while, not that long, just a week or so, and gradually go all the way up. I know its a hard task, you really want to unleash it all, but break in is still important in cars.

The computer doesn't map out a driving style permanently, it would adapt to the more spirited driving. There is a way, its stated in the owner's manual and in previous posts, of how to reset the driving style adapter, however, it is quite a strech to call it "resetting the ECU" as that I don't think it really affected, just throttle position, transmission shift points and harshness. The main thing I've found dictates your launch is the speed at which you do it, slam down to around half throttle and then floor it, for me that seems to give the best results. I know the engine and transmission definately respond to the speed at which you move the throttle, to some extent moreso than the throttle position.
dahappybanana is offline  
post #9 of 9 (permalink) Old 01-30-2008, 09:26 AM
BenzWorld Member
GKMB's Avatar
Date registered: Jan 2008
Vehicle: 190SL
Location: Phoenix, AZ
Posts: 203
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
CLS 550 - Adaptive 7-speed transmission

The first 250+ miles the transmission is learning your driving style. It may seem abrupt or out of sync at first. After a longer period it will have more data to average and will become very smooth.

The common sense method of break-in is described in the owners manual - just be easy on it and .... enjoy!
GKMB is offline  
Sponsored Links

  Mercedes-Benz Forum > General Mercedes-Benz Forums > General Mercedes-Benz

Quick Reply

Register Now

In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Topic Author Forum Replies Last Post
Bluetooth with CLS 550 simba168 C219 CLS-Class 31 02-22-2010 10:36 PM
Considering an '07 CLS 550 jack stefano C219 CLS-Class 4 08-07-2007 05:34 AM
CLS 55 and CLS 500/550 body style newguycls55 C219 CLS-Class 4 05-23-2007 10:30 AM
Why no CLS 550 in Australia? Mike B C219 CLS-Class 1 11-23-2006 10:34 AM
'07 CLS 550 is here! mbenz1 C219 CLS-Class 0 07-22-2006 09:14 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Title goes here

video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome