parking brake question - Mercedes-Benz Forum

 
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post #1 of 4 (permalink) Old 10-07-2013, 08:45 PM Thread Starter
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parking brake question

All these years, I have always engaged the parking brake after parking,

I recently stopped doing this if the car is in my garage or on flat land (obviously putting my automatic in "park".

My dumb question is does one really need the parking brake if the car is on level ground?
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post #2 of 4 (permalink) Old 10-07-2013, 09:32 PM
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Not me. Living in 4-seasons I went long way to not use parking brake in winter. Too often when I went to friends at night the cables could froze in the sheeting and it could be bad surprise when you wanted to go home.
On the other hand, it is easy to go the other way. I don't use parking brake unless on steep slope, yet my driveway has some slope and I catch myself going in front on 4-tons pickup on transmission lock only. Those locks don't fail often, but you don't want to be rare statistic?
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post #3 of 4 (permalink) Old 10-08-2013, 08:32 AM Thread Starter
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another question;

What actually happens when you put the tranny in "park" - How does it lock the car up?
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post #4 of 4 (permalink) Old 10-08-2013, 02:23 PM
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There is a latch that goes between transmission gear teeth. The design could wary, but the idea is to give it basic lock, not design for extreme situation.
DON'T try apply while the car is still moving.
It is common in the city that inexperienced drivers apply transmission brake, than the parking brake. By the time wheel brakes catch, the weigh of the car on steep slope leans on the transmission latch. That makes lot of fun when the driver tries to disengage the brake later.
Other thing that actually made topic in W210 section - the transmission brake holds the drive-shaft. You lift one drive wheel and the other spins freely via the differential.
So do use parking brake and whenever in doubts - better overuse it than underuse.
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