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My first malfunction warning.

Discussion in 'Gen 4 Prius Main Forum' started by kithmo, Jul 8, 2020.

  1. kithmo

    kithmo Couch Potato

    Joined:
    Apr 25, 2010
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    Location:
    South Yorkshire, UK
    Vehicle:
    2016 Prius
    Had a bit of a surprise parking sensor malfunction warning today. I drove the missus to a hospital appointment and parked up, no problem. When I came out to go home I put the car in Ready mode and when I selected "D" the brakes slammed on and I got a picture of the car on the MFD with a big red bar across the front and a loud continuous bleep, suggesting there was something close, in front of the car. I put it back in "P" and got out to check and make sure there wasn't anything there, there wasn't so I wiped the front sensors, got back in the car and selected "D" again, same thing. I was thinking, how do I get out of this, I had reversed in to the parking space and thought I was stuck not being able to go forward. I thought I would try to drive forward and lo and behold it let me, releasing the brakes, I'm assuming the accelerator over rides the brakes with manual input. As I started driving along the display changed to a picture of the car with the sensors greyed out and a message saying clean the parking sensors (no indication of which ones). I stopped off on the way home for some breakfast and wiped all the other side and back sensors, came back and set off, no message, I thought great, then it came on again, this time as I was driving, so I drove home and was thinking of phoning the dealer. I then went out again a little later and thought, I'll clean the front badge in case it's something to do with the radar and as I was wiping the badge I noticed the two black sensors on the front, just under the top grill, which I had forgotten about/not noticed and there was a huge blob of water on one of them which I wiped off, went out and no warnings, problem solved. There was a lot of rain last night and I can only think that the sensor was dry when I first set out and the water had run down off the front when I parked up at the hospital.
     
    tucatz, amos, Pulse07 and 4 others like this.
  2. krmcg

    krmcg Lowered Blizzard Pearl Beauty

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    2016 Prius
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    Four
    I'm glad that you seemed to have figured it out. I'll try to remember this episode if it ever happens to me...
     
    alanclarkeau and kithmo like this.
  3. Pulse07

    Pulse07 Active Member

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    Location:
    East Bay, California
    Vehicle:
    2020 Prius
    Model:
    XLE AWD-e
    intreasting. I think its just the sensors needed some cleaning. Also clean the glass where the camera on the windshield that detects suicidal pedestrians