rbf41000

If anyone is able to give me an answer in plain English I would be thankful.

The question I have is about the distronic plus and or collision avoidance, my 2018 GT roadster has distronic plus and I know how that works and like it but I can't get a straight answer as to whether the car has a crash avoidance system or not? I hear things about the car applying 40% braking or maybe increasing braking if I am infact braking but no straight answer.
On occasion when coming up fast to a car in front that is braking I get a beep and a red warning triangle in my dash but that is all and I wondered if left longer the car would brake for me? Under normal situations I would put a system to the test, (ABS, traction control etc.) but for reasons I'm sure you understand I wont check this system out to see if it works or not.

Thanks for any answers, FYI, I am a mechanical engineer so can understand things if given the facts.

jn66

Hey man -

think this is what you are looking for:

https://www.mercedes-benz.co.nz/pass...assistant.htmlThis is how it works:

• Radar-based distance warning.

A warning light appears in the instrument cluster if the distance to the vehicle ahead falls below a preset value for several seconds within the speed range 7 to 250 km/h. If the distance continues to diminish quickly, the system also emits audible warning bleeps.

• Situation-specific brake boosting effect.

If the system registers the danger of collision with moving objects while travelling at 7 to 250 km/h or with stationary obstacles at 7 to 80 km/h, and if the driver brakes hard, Adaptive Braking Assist will – if required – automatically boost the brake pressure to suit the situation.

• Autonomous partial braking.

If the driver does not respond despite visual and audible warnings, the system automatically initiates partial braking. This already reduces the speed significantly. At low relative speeds, this partial braking may be sufficient to prevent a rear-end collision. If the driver depresses the brake pedal during the autonomous braking intervention, the Adaptive Braking Assist system is activated and decelerates the vehicle to a complete stop if the situation requires. In contrast to the scope of application for Adaptive Brake Assist, independent partial braking in response to moving objects is available only up to 105 km/h – and in combination with Distance Pilot DISTRONIC up to 200 km/h.

john5

If you would also like to test the system it’s easy. Find a large piece cardboard, say at least 5 foot by 3 foot from an appliance or big screen tv box. Suspend so it stays upright as if it’s another vehicle and go for it to see how the car reacts. This would have to be done on a closed course. Obviously exercising all precautionary and safety measures when attempting something like this.

rbf41000

Thanks.

rbf41000

Still sounds a bit "iffy" using cardboard, maybe I could use a large sheet of foam rubber but not sure that that would reflect the radar signal.

Surge

If you are getting the warning triangle in the dash display, then it’s working. I don’t think you need to test the braking portion of the feature. BTW, this feature is not part of the Distronic option, at least in Canada, all GTs have this autonomous braking feature.