Not that I've tried it!!!

Scotsman · 03-01-2010, 08:31 AM

Thinking about the Toyota stuck-throttle problem and what to do in the R-class. It would be very easy to knock it past neutral into reverse which would be pretty catastrophic as I don't think there's any safeguard - is there?

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Benzo 003 · 03-01-2010, 09:25 AM

It is impossible with the electronic transmission in a M/B. Once you get over 10 mph or so, look at the gear selector screen. A small triangle will appear and point to what gear positions are available at that speed.
I have actually experimented with loaners....N is as dangerous as it gets.
You can drop it back into D at highway speeds and the trans will ease back into gear and transition smoothly.

Scotsman · 03-01-2010, 09:31 AM

Quote:

Originally Posted by Benzo 003

It is impossible with the electronic transmission in a M/B. Once you get over 10 mph or so, look at the gear selector screen. A small triangle will appear and point to what gear positions are available at that speed.

Well, well - had it 3 years and never noticed that! Thanks Benzo! Must pay more attention in future!

lkchris · 03-02-2010, 11:13 AM

Unlike Toyota, your Mercedes has drive-by-wire throttle electronics that permit the brake pedal to override the accelerator pedal. Hit the brake, and throttle shuts off.

JTReeves · 03-02-2010, 12:46 PM

Kent,

That is good news. As I read the news articles, I have come to realize that all vehicles that rely on electronic throttle controls may be subject to the design flaw that is affecting Toyota vehicles. It is a relief to see that MB has incorporated a failsafe in the system design.

JR

AsianR350 · 03-02-2010, 12:53 PM

Quote:

Originally Posted by lkchris

Unlike Toyota, your Mercedes has drive-by-wire throttle electronics that permit the brake pedal to override the accelerator pedal. Hit the brake, and throttle shuts off.

Wrong. The new models is drive-by-wire.
My 04 TL Acura and 07 Acura RL are also drive-by-wire.

AsianR350 · 03-02-2010, 12:54 PM

Quote:

Originally Posted by lkchris

Unlike Toyota, your Mercedes has drive-by-wire throttle electronics that permit the brake pedal to override the accelerator pedal. Hit the brake, and throttle shuts off.

Wrong. The new models is drive-by-wire.

http://www.automotiveaddicts.com/947...by-wires-fault

My 04 TL Acura and 07 Acura RL are also drive-by-wire.

Update:
The giant Japanese automaker (TOYOTA) has said all new models sold in the United States will have the override system by 2011 and that many recalled vehicles will be refitted with it.

The system automatically deactivates the accelerator when the brake pedal is pressed, allowing the driver to stop safely even if the car's throttle is stuck open.

lkchris · 03-03-2010, 12:24 PM

Quote:

Originally Posted by AsianR350

Wrong. The new models is drive-by-wire.
My 04 TL Acura and 07 Acura RL are also drive-by-wire.

Who cares?

The question is NOT about whether it's drive-by-wire, the question is whether there is brake pedal override.

The Mercedes has it.

BallJack · 03-03-2010, 02:08 PM

Quote:

Originally Posted by lkchris

Who cares?

The question is NOT about whether it's drive-by-wire, the question is whether there is brake pedal override.

The Mercedes has it.

You're right. Safety is all that matters. However, since you mentioned drive-by-wire as the reason why Mercedes permits the brake pedal to override the accelerator pedal is not valid in this case. Like you said, the question is not whether it's drive-by-wire or not so there wasn't any merit for it to be mentioned in the first place.

R KLASSE · 03-04-2010, 11:51 PM

Not that I have a 2wd R or would attempt it but for hypothetical conversation. Would the electronic brake override make attempting a smoking burnout impossible if you had a 2WD R-Class?

Benzo 003 · 03-05-2010, 09:03 AM

In theory, the "brake Torque" burnout would be impossible.

You could always wait until you get a loaner and give it go....

03-02-2010, 11:13 AM	#4
lkchris MBWorld Fanatic! Join Date: Sep 2005 Location: Albuquerque Posts: 4,112 Drives: '06 E320CDI, '06 SLK350, '07 GL320CDI	Unlike Toyota, your Mercedes has drive-by-wire throttle electronics that permit the brake pedal to override the accelerator pedal. Hit the brake, and throttle shuts off. __________________ Kent Christensen Albuquerque '07 GL320CDI, '06 E320CDI, '06 SLK350

03-02-2010, 12:46 PM	#5
JTReeves Member Join Date: Sep 2007 Location: Woodbridge, VA Posts: 117 Drives: 2007 R-500	Kent, That is good news. As I read the news articles, I have come to realize that all vehicles that rely on electronic throttle controls may be subject to the design flaw that is affecting Toyota vehicles. It is a relief to see that MB has incorporated a failsafe in the system design. JR __________________ 2002 C240 (Retirement present) 2003 C320 (Upgrade for speed!) 2005 SL500 (Gift to wife) 2007 R500 (Easier ingress/egress than SL)

03-04-2010, 11:51 PM	#10
R KLASSE Member Join Date: Jan 2010 Location: Folsom, Ca Posts: 126 Drives: R KLASSE	Not that I have a 2wd R or would attempt it but for hypothetical conversation. Would the electronic brake override make attempting a smoking burnout impossible if you had a 2WD R-Class? __________________ '08 R350 4-Matic P1 Barolo Red, Ash '08 Chevrolet Silverado 2500 HD I own the class just before the S in the alphabet. Life should not be a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming "Wow! What a Ride!"

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03-01-2010, 09:25 AM	#2
Benzo 003 Senior Member Join Date: Sep 2009 Location: Chicagoland Posts: 263 Drives: 2008 ML350 4matic	It is impossible with the electronic transmission in a M/B. Once you get over 10 mph or so, look at the gear selector screen. A small triangle will appear and point to what gear positions are available at that speed. I have actually experimented with loaners....N is as dangerous as it gets. You can drop it back into D at highway speeds and the trans will ease back into gear and transition smoothly.

03-05-2010, 09:03 AM	#11
Benzo 003 Senior Member Join Date: Sep 2009 Location: Chicagoland Posts: 263 Drives: 2008 ML350 4matic	In theory, the "brake Torque" burnout would be impossible. You could always wait until you get a loaner and give it go....

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