I have been wondering if MB programmed the HOLD feature to keep the brakes engaged if you are struck from behind. I use it a great deal and worry that I am going to be rear ended and my right foot is going to hit the gas by accident and disengage the brakes. Of course my left foot is flat on the floor since the brakes are engaged.


Has anyone been involved in an accident when the HOLD feature was on?

I use hold all the time and I don't have a concern with this. I keep my foot to the side or flat when using it. I also would assume that if you get hit from behind the force is going to try and pull your foot away from the peddle anyway (forcing you into the seat more). The brake is set irregardless.
HOLD function

General notes

The HOLD function can assist the driver in the
following situations:

R

R

R

Important safety notes

G

When leaving the vehicle, it can still roll away
despite being braked by the HOLD function if:

R

R

R

R

!

R

R

166

Driving and

Activation conditions

You can activate the HOLD function if:

R

the vehicle is stationary

R

the engine is running or if it has been
automatically switched off by the ECO
start/stop function

R

the driver's door is closed or your seat belt
is fastened

R

the parking brake is released

R

the hood is closed.

R

the transmission is in position D, R or N

R

DISTRONIC PLUS is deactivated

Activating the HOLD function

X

Make sure that the activation conditions
are met.

X

Depress the brake pedal.

X

Quickly depress the brake pedal further
untilëappears in the multifunction
display.
The HOLD function is activated. You can
release the brake pedal.

i

If depressing the brake pedal the first
time does not activate the HOLD function,
wait briefly and then try again.

Deactivating the HOLD function

The HOLD function is deactivated
automatically if:

R

you accelerate and the transmission is in
position D or R.

R

the transmission is in position P.

R

you depress the brake pedal again with a
certain amount of pressure untilë

disappears from the multifunction display.

R

you activate DISTRONIC PLUS.
You will see a warning message in the
multifunction display if the HOLD function is
activated and:

R

the driver's door is open and the driver's
seat belt is unfastened.

R

the engine is switched off, unless it is
automatically switched off by the ECO
start/stop function.

R

the hood is opened.

Shift to 'P'

X

Shift the transmission to position P to
prevent the vehicle from rolling away.
The HOLD function is deactivated. The
warning message in the multifunction
display disappears.
The horn will also sound at regular intervals if
the HOLD function is activated and you:

R

switch the engine off, open the driver's
door and remove your seat belt.

R

open the hood.
The sounding of the horn alerts you to the fact
that the vehicle has been parked while the
HOLD function is still activated. If you attempt
to lock the vehicle, the tone becomes louder.
The vehicle is not locked until the HOLD
function is deactivated.

i

If the engine has been switched off, it
cannot be started again until the HOLD
function has been deactivated.
If there is a malfunction in the system or
power supply while the HOLD function is
activated, the Brake Immediately message
is shown in the multifunction display.
Immediately depress the brake firmly until
the warning message in the multifunction
display goes out.
You can also shift the transmission to position

P. This deactivates the HOLD function

Thanks for the reference information. My primary concern is disengaging the HOLD feature when struck from behind. Since hitting the Gas or Brake pedal releases the car from HOLD has Mercedes installed an override that prevents disengagement if the car is struck.


Just curious.

I break with my left foot and have done so for 50+ years. This solves your problem. It also works for FORMULA 1 drivers. Plus quicker responce time in an emergency.