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Caspian Blue SLK350
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Here is an article I came across in Car and Driver on placing the SLK in Dynomode. The article comes with some words of caution. [:D]

Turn It Off—All the Way Off!

For years we've complained about the butt-in behavior of the electronic stability programs in Mercedes-Benzes, which automatically intervene to shut down power and braking when they think your driving needs help. A dashboard switch suggests the program can be turned off, but it can't—it just kicks in at what it sees as a more intemperate level of driving on your part. We were convinced it simply could not be shut off.

Well, Benz lovers, we found a way.

Here's how. To start, turn the ignition key to the first accessory position, making sure the dash display shows the odometer. The SRS airbag light should be on. Press the trip odometer reset button three times rapidly before it goes off. If you do this right, a screen will appear showing a voltmeter. Then press the "up" arrow on the left side of the wheel twice to take you to the "ESP dynamometer test" screen. Using the plus (+) button on the right side of the wheel, select "on." And then start the car. Warnings will appear informing you that the ESP, ABS, and BAS (brake assist) aids are now turned off and you're on your own.

If you did it right, you've put the car in a mode intended for diagnostic testing on a rolling dynamometer—all electronic supervision is unplugged. Unhindered by techno-aids, the SLK's grip on the skidpad improved by 0.03 g compared with simply hitting the ESP switch on the dash. To return all the safety technology, scroll back to the dyno test screen and select "w/t. 15 off" with the minus (-) button. Shutting off all the electronic aids isn't easy, and that should tell you something. Owners are not generally privy to the dynamometer mode; therefore, we will continue to publish test numbers attained with the dashboard ESP switch turned off. We just thought you'd want to know.
 

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Thanks for the info. In Illinois, we have to get our cars tested for air pollution compliance every two years. They test the cars on a dynometer. I was concerned about how the ESP would handle it.
 

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slk 55
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Hidden Menus

Did anyone else notice the other menus when doing this? I have a '55, and if I press the "up" arrow only once, the upper display says "Instr. No. R171 540 05 47" What's that about? Also, if you start the car from that screen, apparently the display is showing you the engine oil level in tenth's of a quart. The display also shows "AMGM 113E55"...wonder what that is. Also, at the same time my lower display shows "SW 2604 Ver 0047 HW 0105". I assume SW is the number of the software, and Ver is the software version number. Anyone know what HW is? Also, if you press the "up" arrow 3 times, I get a screen called "Service Menu" which includes "Service Data", "Item", "Addit. Work", and "Confirmation". Anyone know what that's about? I'm bringing my car in for the 1000 mile diagnostic check today...wonder if they will be able to tell that I've been snooping around :)
 

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slk 55
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Steve-P, how did you know that's what I was looking for? [;)]
 

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slk 55
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Since it's raining here today, of course I had to try driving the car in Dynomode. Needless to say, with all that torque, on a wet road, you can make the back end of the car break away by using only 1/2 throttle...and I also verified the ABS system was shut off.
 

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Is there a way to turn the ESP completely off but leave the ABS and brake assist functions on? I'm tracking my car in a couple weeks and that's what I'd like to do.
 

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slktyperice - 5/2/2005 1:17 PM

Is there a way to turn the ESP completely off but leave the ABS and brake assist functions on? I'm tracking my car in a couple weeks and that's what I'd like to do.
Slktyperice, not that I'm aware of. I will tell you this...after playing around yesterday I did get the distinct impression that the 0-60 time with the ESP fully turned off should be significantly better than with it turned on. In full throttle acceleration starts in first gear in transmission setting "S" the ESP cuts back the throttle much too early and too severely. With the ESP defeated, there is some wheelspin, but you quickly learn to modulate it correctly, and the holeshot is absolutely awesome...and sounds good, too :) Can't play around like this too often though...can't be good for the powertrain, and those rear tires are much too expensive, but WOW :)
 

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shark, I forgot to mention I'm driving a 6MT and I'm pretty good at shifting right at redline (i roasted many an auto SLK350) with the ESP "off" (no dynomode). One thing though for this, I'm considering trying DynoMode for one of my track runs (20 min runs) in a couple weeks. Granted I've never driven a RWD car before the SLK (about 3300 miles on it now), I'm not sure if it's a good idea even though I do get more grip on the corners since the SLK350 has no LSD like the M3 so I'm afraid the tail will slide out too quickly when I'm taking hard corners when not fully knowing the limits of my car. I'm not too concerned about the tires since I'm really waiting to burn this set out so I can replace them with Potenza S-03s (the stickiest street tires I've ever used).

My question is this then. If I decide to turn on DynoMode on a run but I decide DURING the run that I do need the electronic nannys, is it possible to turn the ABS/ESP back on while driving by hitting the ESP button on the dash. Thanks in advance to whoever can test this out for me.
 

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slktyperice - 5/4/2005 2:31 PM

shark, I forgot to mention I'm driving a 6MT and I'm pretty good at shifting right at redline (i roasted many an auto SLK350) with the ESP "off" (no dynomode). One thing though for this, I'm considering trying DynoMode for one of my track runs (20 min runs) in a couple weeks. Granted I've never driven a RWD car before the SLK (about 3300 miles on it now), I'm not sure if it's a good idea even though I do get more grip on the corners since the SLK350 has no LSD like the M3 so I'm afraid the tail will slide out too quickly when I'm taking hard corners when not fully knowing the limits of my car. I'm not too concerned about the tires since I'm really waiting to burn this set out so I can replace them with Potenza S-03s (the stickiest street tires I've ever used).

My question is this then. If I decide to turn on DynoMode on a run but I decide DURING the run that I do need the electronic nannys, is it possible to turn the ABS/ESP back on while driving by hitting the ESP button on the dash. Thanks in advance to whoever can test this out for me.
I was not able to find a way to do this. The only way I could figure out how to turn Dynamode on and off is when the ignition key is in the accessory position.
 
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