Radar warning light

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adn1962
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Joined: Wed Feb 12, 2020 6:03 pm
Location: Solihull, West Midlands

Radar warning light

Post by adn1962 » Thu Oct 01, 2020 9:53 pm

Yesterday, my radar warning light came on. Basically telling me the radar warning system was not active.
As it was raining heavily, I assumed it was due to this, plus the fact I’ve been having some building work done ( loads of dust around ).
When I got home, I quickly cleaned the badge area on grille and it cleared the fault.

I’m slightly alarmed that rain can affect the radar system so easily. I suppose though, it errs on the side of caution if there is a any slight interference with it filed of view.

Anyone had the same issue?

P.S. it’s amber warning at top of right hand clock during system check.

31D2245F-1CA1-4608-81D9-5900FC2B3BE4.jpeg

Metalstream Excel 2018. Mud flaps, dash cam, Bumper corner protection, chrome boot and sill protectors, door handle protection film, Smoked Toyota wind deflectors, Spare wheel kit.
Bike - 2018 Honda Forza 300, touring screen, top box and Puig handguards.

Alexr
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Joined: Sat Jan 07, 2017 10:39 pm
Location: Reading, UK

Re: Radar warning light

Post by Alexr » Thu Oct 01, 2020 10:19 pm

Yes I have had that in heavy rain, but I think was the camera by the rear view mirror that was getting blocked. (Wet leaf stuck there).
All the best
Alex
------------------------
Loving driving my C-HR Excel Hybrid in Metal Stream :P

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Craig
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Location: West Yorkshire

Re: Radar warning light

Post by Craig » Fri Oct 02, 2020 12:33 pm

It is the only time I have had that. In a heavy rain storm on the motorway. Never happened since so nothing to worry about.
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adn1962
Posts: 263
Joined: Wed Feb 12, 2020 6:03 pm
Location: Solihull, West Midlands

Re: Radar warning light

Post by adn1962 » Fri Oct 02, 2020 12:37 pm

I thought the camera in screen was for Roadsign recognition and auto headlamp beam assist? Radar behind grille is for cruise?
Metalstream Excel 2018. Mud flaps, dash cam, Bumper corner protection, chrome boot and sill protectors, door handle protection film, Smoked Toyota wind deflectors, Spare wheel kit.
Bike - 2018 Honda Forza 300, touring screen, top box and Puig handguards.

Alexr
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Joined: Sat Jan 07, 2017 10:39 pm
Location: Reading, UK

Re: Radar warning light

Post by Alexr » Fri Oct 02, 2020 1:17 pm

adn1962 wrote:
Fri Oct 02, 2020 12:37 pm
I thought the camera in screen was for Roadsign recognition and auto headlamp beam assist? Radar behind grille is for cruise?
Might be a coincidence in my case.
All the best
Alex
------------------------
Loving driving my C-HR Excel Hybrid in Metal Stream :P

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DutCHR
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Location: Netherlands

Re: Radar warning light

Post by DutCHR » Fri Oct 02, 2020 6:28 pm

It is the light for the radar sensor located behind the emblem on your grille.

With the warming light there was no message like "clean radar sensor"? That can happen in heavy rain or when it is dirty.
Sometimes the light and error can dissapear in few miles.. otherwise a quick wipe over the Toyota logo will be ok. Sometimes it need a restart.
2017 C-HR Hybrid Metalstream Grey --- Genuine JDM styled and also a lot of sh*t from China
2019 Corolla TS 2.0 Hybrid --- 180HP Girlpower!

adn1962
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Joined: Wed Feb 12, 2020 6:03 pm
Location: Solihull, West Midlands

Re: Radar warning light

Post by adn1962 » Fri Oct 02, 2020 7:02 pm

DutCHR wrote:
Fri Oct 02, 2020 6:28 pm
It is the light for the radar sensor located behind the emblem on your grille.

With the warming light there was no message like "clean radar sensor"? That can happen in heavy rain or when it is dirty.
Sometimes the light and error can dissapear in few miles.. otherwise a quick wipe over the Toyota logo will be ok. Sometimes it need a restart.
No message. Just warning light. I cleaned the emblem and it was OK after.

I know through working in car manufacturing that:- radar unit behind grille is for cruise and camera top of screen is Road Sign recognition and auto high beam.
Metalstream Excel 2018. Mud flaps, dash cam, Bumper corner protection, chrome boot and sill protectors, door handle protection film, Smoked Toyota wind deflectors, Spare wheel kit.
Bike - 2018 Honda Forza 300, touring screen, top box and Puig handguards.

ColinB
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Location: Portsmouth

Re: Radar warning light

Post by ColinB » Sat Oct 03, 2020 3:09 pm

It's happened to me once in heavy rain, soon cleared itself though. I also had the same problem with my previous car, a Nissan Pulsar, so it isn't just the C-HR that suffers from this.

Anixie
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Location: Geel, Belgium

Re: Radar warning light

Post by Anixie » Sat Oct 03, 2020 7:33 pm

Always happens in heavy rain. Just when you could really use it.......
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adn1962
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Joined: Wed Feb 12, 2020 6:03 pm
Location: Solihull, West Midlands

Re: Radar warning light

Post by adn1962 » Sat Oct 03, 2020 8:29 pm

Anixie wrote:
Sat Oct 03, 2020 7:33 pm
Always happens in heavy rain. Just when you could really use it.......
Not washed mine for a couple of weeks, plus the heavy rain............🤷🏻‍♀️
Metalstream Excel 2018. Mud flaps, dash cam, Bumper corner protection, chrome boot and sill protectors, door handle protection film, Smoked Toyota wind deflectors, Spare wheel kit.
Bike - 2018 Honda Forza 300, touring screen, top box and Puig handguards.

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