Radar Blocked following accident

James2k2 · Apr 2nd, 2019, 21:30

Hi all,

So I was involved in a sandwich accident where somebody rear ended me causing me to go into the vehicle in front. Fast forward a month and my car comes back from the garage. I hand back the brand new S90 I had, and took my S60 back only to find on my first journey to work this message starts appearing (it's a bright clear day) , as well as the system seemingly very badly calibrated (when it decided it wasn't blocked), and would start to auto brake when overtaking lorries on the motorway because it thought they were in front of me! Anyway, the garage have now had it back nearly a week and claim the fault is with the little plastic radar cover.

I'm sceptical, and my question is could that really be the cause of the problem?

Thanks for reading!

Fat Magpie · Apr 7th, 2019, 09:49

I am surprised the entire unit was not replaced, the tolerances in the radar bit are fractions of an mm. Inside it looks like plumbing the business end being cavity joined to a short piece of waveguide then to the antenna at the front. After the collision, if any of these pieces are slightly distorted or misaligned by fractions of an mm its bad news.
Perhaps the front plastic cover is the antenna section and its not mating properly with the rest of the unit. Its module maintenance, swap bits out until it works properly.

Zebster · Apr 7th, 2019, 10:04

It doesn't matter which bit is faulty, surely the repairer should have replaced all parts damaged in the accident?

Apr 2nd, 2019, 21:30	#1
James2k2 New Member Last Online: Aug 2nd, 2023 18:06 Join Date: Dec 2017 Location: Lincoln	Radar Blocked following accident Hi all, So I was involved in a sandwich accident where somebody rear ended me causing me to go into the vehicle in front. Fast forward a month and my car comes back from the garage. I hand back the brand new S90 I had, and took my S60 back only to find on my first journey to work this message starts appearing (it's a bright clear day) , as well as the system seemingly very badly calibrated (when it decided it wasn't blocked), and would start to auto brake when overtaking lorries on the motorway because it thought they were in front of me! Anyway, the garage have now had it back nearly a week and claim the fault is with the little plastic radar cover. I'm sceptical, and my question is could that really be the cause of the problem? Thanks for reading!

Apr 7th, 2019, 09:49	#2
Fat Magpie Senior Member Last Online: Apr 18th, 2024 11:47 Join Date: Mar 2015 Location: Belfast and London	I am surprised the entire unit was not replaced, the tolerances in the radar bit are fractions of an mm. Inside it looks like plumbing the business end being cavity joined to a short piece of waveguide then to the antenna at the front. After the collision, if any of these pieces are slightly distorted or misaligned by fractions of an mm its bad news. Perhaps the front plastic cover is the antenna section and its not mating properly with the rest of the unit. Its module maintenance, swap bits out until it works properly. __________________ XC60 MY10 AWD D5 Summum 205 PS, Geartronic, Winter pack, Aux diesel heater, Xenons, Family pack, Tinted rears, Moonroof, Parking sensor F&R, Premium sound, Car phone, Reversing camera, Lane departure, Hill decent, Savile Grey.

Apr 7th, 2019, 10:04	#3
Zebster Upstanding Member Last Online: Sep 12th, 2023 11:29 Join Date: Mar 2018 Location: Ludlow	It doesn't matter which bit is faulty, surely the repairer should have replaced all parts damaged in the accident? __________________ GONE: 2015 V60 D4 181 (VEA) R-Design Lux Nav manual in black

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