Reduced driver assistance

Wonks20 · 11-13-2019, 04:10 PM

I have been getting "Driving assistance support reduced" error pop up on the navigation lately and I noticed it occurring when I'm driving on the highway only.
After checking what systems are affected it shows: active blind spot detection, lane departwure warning, side collision warning.
Funny thing is that the active blind spot detection does work when a car passes by.

2019 G12

Pelo Cat · 11-13-2019, 05:07 PM

It happens at times when a leaf or some other object blocks the sensor below the front spoiler or the cameras on the windscreen. Heavy rain (very heavy) or other conditions can affect it temporarily. It won’t clear the reduced setup until you stop and turn off/on the car again at least in mine. The newer ones have heated radar units on the front spoiler for snow contions as earlier ones (mine included) stop working then too...the mirrors and some systems/sensors remain unaffected by the front sensors being limited at times. Hope this is all that is stopping yours but if it persists get it checked out at a dealer. Safe travels.

11-13-2019, 04:10 PM	#1
Wonks20 Private 3 Rep 72 Posts Drives: 2017 Bmw i3 Rex & 2019 750i M Join Date: Jan 2018 Location: California iTrader: (0)	Reduced driver assistance I have been getting "Driving assistance support reduced" error pop up on the navigation lately and I noticed it occurring when I'm driving on the highway only. After checking what systems are affected it shows: active blind spot detection, lane departwure warning, side collision warning. Funny thing is that the active blind spot detection does work when a car passes by. 2019 G12
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11-13-2019, 05:07 PM	#2
Pelo Cat Lieutenant 93 Rep 527 Posts Drives: '16 G11 730d, '18 F33 420d Cab Join Date: Dec 2017 Location: Bristol, UK iTrader: (0) Garage List 2018 BMW 420d Conve ... [0.00] 2016 BMW 730D [0.00]	It happens at times when a leaf or some other object blocks the sensor below the front spoiler or the cameras on the windscreen. Heavy rain (very heavy) or other conditions can affect it temporarily. It won’t clear the reduced setup until you stop and turn off/on the car again at least in mine. The newer ones have heated radar units on the front spoiler for snow contions as earlier ones (mine included) stop working then too...the mirrors and some systems/sensors remain unaffected by the front sensors being limited at times. Hope this is all that is stopping yours but if it persists get it checked out at a dealer. Safe travels.
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