CAUTION! must use the parking brake on incline

17476 Views 20 Replies 6 Participants Last post by RSM, Feb 13, 2014

RM5

Discussion Starter · Feb 11, 2014

So it happened twice car was in Park ! (gear) selected after few minutes car rolls back on inclined road . luckily was in car . took it to dealer and was told it states it in the owners manual car can default back to neutral So on a hill must use parking brake. what engineering marvel was this

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RM5

Discussion Starter · #5 · Feb 12, 2014

On a slight incline you should not need to use the parking brake. plus the fact that it goes into neutral on its own

apparently Mercedes knows this because they have a disclaimer in the manual.

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RM5

Discussion Starter · #7 · Feb 12, 2014

Tonyride said:
Can you point out what page that's on in the manual?

page 142

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RM5

Discussion Starter · #12 · Feb 12, 2014 (Edited)

Tonyride said:
According to the warning on that page it sounds like you put the car in Neutral (N) instead of Park (P ) when you shut off your car. Are you sure put push the button at the tip of the shift lever to put it in Park rather than moving the lever up or down to put it in Neutral? Because it says if you put it in park the brake is automatically engaged.

Car was in park , NOT neutral .sitting in car when it rolled after 15 min or so.yet it shows P.
dealer pointed this out on page 142 and it says car can go into neutral hence use park brake .

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RM5

Discussion Starter · #16 · Feb 12, 2014

tonyride said:
you mean for 15 minutes the car held its position and then it just started to roll?

yes

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RM5

Discussion Starter · #19 · Feb 12, 2014

StayCLAssy said:
Somethings not right, I would take to the dealer and have them show you others that roll back even in P mode. I take it this is what you're reading,
View attachment 1482

I can see how it can be taken as it will switch to N when turned off but I don't think it's the case. At least not when it's already on P mode. The part about the P-Brake is disclaimer found in all manuals for safety reasons. Kinda like always make sure to wear goggles when using power tools.

I also think it is a defect but do I want to waste my time with the hard headed dealer.or just apply parking brake. I already took the car in twice both times could not duplicate. The explanation I was given is this is like a "hybrid transmission

it is like a manual but an automatic you Have to use the P brake" . I must have had an idiot sticky note on my forehead.

after waiting 3 hours I was done.

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