DYNO ABS ESP Off Mode: Secret Menu Mercedes-Benz GLK-Class
Reviewed/Verified by:
How can I use my instrument cluster for the secret menu on my Mercedes-Benz? Learn how to access the secret menu on your Mercedes-Benz instrument cluster by following the procedures below. This guide provides instructions on how to enter the secret menu and turn off ABS and traction control on a Mercedes-Benz GLK-Class.
At a Glance
- Fits: Mercedes-Benz GLK-Class, similar on many Mercedes models of the same era
- What it does: disables ABS, traction control, stability control and brake assist
- Access: hidden service menu in the instrument cluster, Dyno Test, press OK
- Use for: dyno runs, roller brake tests and diagnosis only
- Warning: do not drive on public roads with dyno mode on
What does Dyno Mode do?
Dyno mode allows you to disable various systems, including ABS, traction control, emergency braking, and stability control. It also lets you check the engine model battery voltage and display the VIN. These systems make handling safer and more predictable, particularly in wet road conditions where you are more likely to lose control.
Procedure
- Push the engine start button once, and turn it with one click if you’re using a key. Do not step on the brake pedal when doing this procedure.
- Go to the trip and miles menu on your cluster. Use the left and right arrows on the left side of your steering wheel to locate the cluster’s trip and miles menu.
- Go to Dyno Test. Press the phone button on the right side of your steering wheel, then press the OK button on the left side of your steering wheel. Hold both buttons pressed for five seconds. Then, use the up and down arrow buttons to go to the dyno test.
- Enable Dyno Test. Press the OK button on the steering wheel to enable the dyno mode. Then start your engine, and the cluster will show EBD, ABS, and traction control is off or unavailable.
Should I drive with DYNO mode enabled?
It is not recommended to drive with DYNO mode enabled. With ABS, traction control, stability control and emergency braking assist switched off, the wheels can lock under hard braking and the car can slide on wet or slippery roads. Use it only on a dyno, for a roller brake test, or for diagnosis, and switch it off in the same menu before driving on the road.
🔧 Find out what is actually wrong before you pay someone to guess
Dealer level diagnostics at home with the YOUCANIC UCAN-II Pro.
- ✔ Covers most makes and models, including many luxury brands. Send us your VIN and we will confirm your car before you order
- ✔ Reads every module, not just the engine, so you find the faults a basic reader says are not there
- ✔ Commands the car: test a fan or pump, bleed ABS, retract an electronic parking brake, register a battery
- ✔ No subscriptions. Free lifetime updates, so the price you pay is the whole price
- ✔ Backed by real mechanics in the USA you can email before and after you buy
Featured in The Wall Street Journal
Warning Lights Still On After Dyno Mode?
If the ABS, ESP or brake warnings stay on after you disable dyno mode and restart the engine, there is a real fault in the system. Common causes on the GLK are a wheel speed sensor, a low battery voltage event or a steering angle sensor that needs calibration. The YOUCANIC UCAN-II Pro reads the ESP and ABS module codes on supported Mercedes models so you can see what is actually wrong.
Frequently Asked Questions
What is dyno mode on a Mercedes?
A hidden cluster setting that turns off ABS, traction control and stability control so the car can run on a dynamometer or roller brake tester without the systems intervening.
Is it safe to drive with dyno mode on?
No. Without ABS and stability control, the wheels can lock and the car can slide. Turn it off before driving on the road.
Can dyno mode clear ABS or ESP warning lights?
No. It only switches the systems off temporarily. Lights that stay on afterward mean a real fault that needs diagnosis.
Check these troubleshooting and repair guides for more help on your Mercedes-Benz.
