Originally Posted by tiggold (Post 3740492)

I was driving my 03 SL55 with the top down and when I hit 125 mph it stop right there. Flat road but I could not go any faster? Is there a limiter on my car or all cars?

Lots of power to 125 so I don't know what happen?

Originally Posted by FLSL55 (Post 3741240)

I heard the Early SL55's didn't have dyno mod either....

Originally Posted by Sunir (Post 3741451)

What is the Dyno mod?

Originally Posted by cal1 (Post 3741464)

I thought I remembered previous discussion about dyno mode. Here is a link with good discussion about it: https://mbworld.org/forums/w211-amg/...dyno-mode.html

Originally Posted by tiggold (Post 3740492)

I was driving my 03 SL55 with the top down and when I hit 125 mph it stop right there. Flat road but I could not go any faster? Is there a limiter on my car or all cars?

Lots of power to 125 so I don't know what happen?

Originally Posted by Sunir (Post 3741783)

I read that thread but it seems to just talk about not driving an E55 with the car on dyno mode...and what Dyno mode disables

What I want to know is (1) Do I have Dyno mode on my '03 SL55
(2) If yes, then how do I get the car into and out of this mode, once again for an '03 SL55

Originally Posted by Benz-O-Rama (Post 3742251)

I hit 152 with my top down in my 2005 SL600. Don't think your car should be any different.



Sunir,

Both my E500 and SL600 have dyno mode and I would think yours would too. It disables all of the nannies. ESP, ABS, etc.. and is very dangerous to drive in that mode for obvious reasons. Now, on the drag strip, many choose to use this mode to get aggressive launches.

Here's the procedure for the E55, it's the same for our cars.

1. Turn ignition key to position 1 (SRS light on).

2. Make sure digital temperature gauge shows in instrument cluster. If it doesn't, use the arrow buttons on the left side of wheel to scroll through menu until it does.

3. Turn ignition switch off and back on again to position 1 (SRS light on).

4. Quickly, while the SRS light is on, push the trip odometer reset button at the far left of the instrument gauge cluster 3 times quickly.

5. Your display should now have a voltage reading, like "UB: 12.0V" on the screen.

6. Hit the up arrow button on the left side of the wheel until you get to the display that reads "ESP Dynamometer Test".

7. Now go to the right side of the steering wheel and hit the plus (+) button once to light up the "on" button for ESP Dynamometer Test.

8. Start up the car - you're now in dyno mode. The display will read "ESP unavailable Diagnostic Test". The car will stay in dyno mode, even if you turn off the engine.

9. To turn dyno mode off, turn ignition off, then turn ignition switch to position 1 again and hit the minus (-) button on the right side of the steering wheel once until the display says "ESP Dynamometer Test Circuit 15 off." Turn off the ignition - you're back to normal and out of dyno mode.

Jakpro also did a video of it. It's also in the E55 forum somewhere.

Originally Posted by Sunir (Post 3744838)

thanks BOR bro...sounds like a test manual excerpt! I assume the only times you'd want dyno mode is for the dyno and the drag strip?

Originally Posted by Fantasm (Post 3744899)

yeah greeat, turn off all your safety features including ABS when your STREET RACING AND ANYTHING CAN POP OUT AND YOU WOULD NEED THE 100% BENEFIT OF THESE SAFETY FEATURES.
Best thing I guess for you is to lock up your brakes when that Honda Civic all of a sudden jumped out into the road while you were doing 80 in a 35mph zone.

Originally Posted by Benz-O-Rama (Post 3744925)

You definitely shouldn't be street racing in dyno mode. With the power our cars are putting down, you're gonna want those nannies if you get a little out of shape. On a closed course or dragstrip when things are in a controlled atmosphere, go nuts. You don't have to worry about that 8 year old on a bike jumping out in front of you.

You could easily shred a set of rear tires in dyno mode though. :D

Originally Posted by tiggold (Post 3740492)

I was driving my 03 SL55 with the top down and when I hit 125 mph it stop right there. Flat road but I could not go any faster? Is there a limiter on my car or all cars?

Lots of power to 125 so I don't know what happen?