Backup safety features and bike rack

Discussion in 'Gen 4 Prius Main Forum' started by gadfly76, Oct 1, 2018.

  1. gadfly76

    gadfly76 New Member

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    Hi Folks,

    Brand new member here. I'm writing with a question about my 2018 Prius Two. I recently had a hitch receiver installed and have been using a hitch mounted bike rack. I quickly discovered two problems.

    1. With just the rack installed and no bike, the back up sensors detect the rack as an obstruction behind the vehicle and emits a warning tone. This is annoying, but I can live with it.

    2. Worse, when I actually have a bike loaded up, the car's safety features will actually slam on the brakes while I'm trying to back up. Tried parallel parking yesterday with a bike on the back and it was not fun!

    Is there a way to turn off either or both of these safety features while using a bike rack?

    Thank you!
     
  2. Tideland Prius

    Tideland Prius Moderator of the North
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    upload_2018-10-1_22-39-54.png

    Scroll down until you see the ICS settings


    upload_2018-10-1_22-40-37.png
     
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  3. gadfly76

    gadfly76 New Member

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    Thank you!!
     
  4. The Professor

    The Professor Senior Member

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    Hang on, hang on... the PCS (Pre-Collison System in US, Pre-Crash System in UK) is the visual (camera at centre top of front glass) and radar (behind the Toyota badge) based forward looking system, that detects pedestrians and vehicles while you're travelling above 10MPH. Surely you want to keep that on? Attaching stuff to the rear of the car should be affecting that.

    It's only the ICS (Intelligent Clearance Sonar) that is used when moving slowly and backwards... that's the ultrasonics around the car, which is likely to be interfered with by the attachments on the back.
     
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  5. Mendel Leisk

    Mendel Leisk Sand Pounder

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    I see these bike racks, sometimes projecting back close to 3 feet: should there be a red flag or reflector on the back of these? Also, kind flys in the face, of the concept of "bumpers". But that went the way of the dodo in the early eighties.
     
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  6. Tideland Prius

    Tideland Prius Moderator of the North
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    That’s correct. The OP wants ICS off (the one I circled in the second image). Don’t turn off PCS.


    I’m not sure what the limit is until a red flag is required.
     
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  7. Colin Jones

    Colin Jones Member

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    Depends on where you are of course as I imagine these regs vary country to country, but in the UK, anything less than two metres projecting, the end should simply be "Clearly Visible", and less than one metre has no specific requirement at all. What you define as "clearly visible" is up for debate of course. Bike racks that are longer than one metre, are likely to have number plate, lights and indicator board at the rear anyway, as they'd be illegal here otherwise due to obscuring them on the vehicle.

    https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/409165/Information_Sheet_Overhanging_loads.pdf
     
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  8. epon

    epon Junior Member

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    Chiming in with a '21 Prime LE that does not have an individual ICS setting to disable. I'll eventually put a hitch and rack on this car so hopefully just turning off PCS will do the trick for being able to back up.
     
  9. Tideland Prius

    Tideland Prius Moderator of the North
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    PCS affects the front radar and won’t do anything for the rear sonar sensors that are part of ICS.
     
  10. epon

    epon Junior Member

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    Any idea how to turn off ICS with a car that doesnt have it in the menus?
     
  11. Tideland Prius

    Tideland Prius Moderator of the North
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    A Prime LE doesn’t have ICS. You have to get the Limited.

    If you have backup sensors, then they were added by the dealer.
     
  12. tucatz

    tucatz Active Member

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    Ummm, if the OP has a XLE AWD-e be careful to set the PCS, LDA, and BSM but do not turn off the ICS. Watch your HUD and SOC on your MDS or you get a POS.
     
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  13. Ajrob671

    Ajrob671 Junior Member

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  14. MIkeDr

    MIkeDr Active Member

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    I used the Carista app to turn off front parking sensor beeping when the car hasn’t been moving for 3 seconds or is in neutral (can’t recall which — it’s one or the other). It’s a nice feature when going through automatic car washes, instead of having to hunt thru the menus.
     
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  15. Tideland Prius

    Tideland Prius Moderator of the North
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    Oh that would be useful, especially in a drive-thru. On those curved ones, the car always detects the foliage beside the drive-thru window on a curve.
     
  16. MIkeDr

    MIkeDr Active Member

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    I really recommend Carista for this sort of thing. We park our car in an underground garage in our condo building. There’s a tight turn in to get into the garage, and our parking space is next to a concrete pillar. While the parking sensors still go off, having slightly reduced range decreases how much they beep, and decreasing the volume has also made it more bearable.

    I realize that this is a feature not found on the Prius’ price point, but one thing I really miss from our prior Mercedes is 360 Birdseye cameras.
     
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  17. Tideland Prius

    Tideland Prius Moderator of the North
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    I would’ve gotten carista if they didn’t go to a subscription model.


    Well the Camry has a Birdseye camera system so it depends on how Toyota wants to price and market the Prius.
     
  18. jbarker

    jbarker Junior Member

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    I have a 2019 XLE AWD-e without the heads-up display. My Settings Display does not show ICS. Is it possible for me to disable the rear sensors so that a hitch-mounted bike rack won't set off alarms? There is nothing about this in my manual and I'm afraid the jargon above has me lost. Thanks.
     
  19. Mambo Dave

    Mambo Dave Active Member

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    One could go to a roof rack:

    [​IMG]
     
  20. tucatz

    tucatz Active Member

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    sadly, my sarcastic humour was lost in this post.

    yes, I believe you can turn off the rear sensors when using a rear hitch.

    my 70 lb ebike is too heavy for a roof rack.
     
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