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Automated reverse breaking

Sparkyme24

Active Member
Joined
May 31, 2020
Messages
63
Location
London
Car
Mercedes 2015 saloon bluetec
I have Mercedes c class 2015 w205. It has got Collision prevention assist which is suppose to automatically brake and stop the car in case of a collision.
However recently I was parking my car (reverse parking) and didn’t notice the car parked at the rear and ended up bumping my car into it.
Surely the automated collision system
Should have automatically braked my car and avoided this collision?
 
I have Mercedes c class 2015 w205. It has got Collision prevention assist which is suppose to automatically brake and stop the car in case of a collision.
However recently I was parking my car (reverse parking) and didn’t notice the car parked at the rear and ended up bumping my car into it.
Surely the automated collision system
Should have automatically braked my car and avoided this collision?
Please tell me this is a joke?
 
As John McEnroe once said.... "You cannot be serious!"
 
Collision prevention is a forward motion radar system. And it works above 5 to 7 mph I think not in reverse that's where the parking sensor system as well as the drivers vision comes into play. So don't really think you have a leg to stand on
 
Collision prevention is a forward motion radar system. And it works above 5 to 7 mph I think not in reverse that's where the parking sensor system as well as the drivers vision comes into play. So don't really think you have a leg to stand on
Ok thanks understood. Just wanted to make sure.

does my car w205 has an automated braking system for the front in case of a collision or will it just beep to notify me and not brake on its own for the front ??
 
Ok thanks understood. Just wanted to make sure.

does my car w205 has an automated braking system for the front in case of a collision or will it just beep to notify me and not brake on its own for the front ??
It has the collision prevention system it will highlight a red triangle in the cluster if you are travelling to close to the car in front then if the car in front was to brake it would beep to warn but if no driver intervention was seen and it calculated a collision risk it would brake. I wouldn't let it get to that point as its there as the last resort to stop an impact
 
It has the collision prevention system it will highlight a red triangle in the cluster if you are travelling to close to the car in front then if the car in front was to brake it would beep to warn but if no driver intervention was seen and it calculated a collision risk it would brake. I wouldn't let it get to that point as its there as the last resort to stop an impact
Yes of course I won’t - foot always on the brake and alert. I just wanted to know how the collision prevention system works for my knowledge. Many thanks for the note
 
Newer VW group cars have 'manoeuvre braking' in both forward and reverse - is uses the parking sensors and brakes hard but only at the last moment to stop impact and I think it only works at very low speed.

No idea if MB have something similar - my car doesn't even have parking sensors.
 
Ok thanks understood. Just wanted to make sure.

does my car w205 has an automated braking system for the front in case of a collision or will it just beep to notify me and not brake on its own for the front ??
Its not automated braking, its called 'collision mitigation with brake assist' and it works above a few mph for almost all forward events, unless you have the optional 360 camera with brake assist plus (BAS+) and x traffic assist (all comes as a package with the 360 camera). The rear brake assist only works at parking speeds and is mainly to protect you from crossing traffic in your blind spots, in my experience it was a bit intrusive at parking speeds except when cyclists and pedestrians walked past whilst reversing (which is what I think its invented for).

This is like Tesla's 'Full Self driving computer', That happens to be its patented name and not a statement of its capabilities......
 
Yes of course I won’t - foot always on the brake and alert. I just wanted to know how the collision prevention system works for my knowledge. Many thanks for the note
Do you not think your time may be better spent studying the owner's manual and not presume that your car will take care of situations that you as the driver have complete and sole responsibility for?
 
Do you not think your time may be better spent studying the owner's manual and not presume that your car will take care of situations that you as the driver have complete and sole responsibility for?

To be fair to the OP, I don't think he was blaming the car, I think he accepts that he was negligent, he's just wondering why the failsafe system which he thought he had, didn't work.

In the same way as someone crashing the car might wonder why the airbag didn't deploy - (because the speed was too low, because of the angle of the collision, etc etc) - buy they obviously wouldn't blame the airbag for the crash.
 
To be fair to the OP, I don't think he was blaming the car, I think he accepts that he was negligent, he's just wondering why the failsafe system which he thought he had, didn't work.

In the same way as someone crashing the car might wonder why the airbag didn't deploy - (because the speed was too low, because of the angle of the collision, etc etc) - buy they obviously wouldn't blame the airbag for the crash.
Thank you!! Yes exactly!! That was my point
 

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