Anyone else experiencing pre-collision system malfunctions in their Toyota?

Technical Discussions
1

I’ve recently run into a frustrating issue with the pre-collision system on my Toyota. It’s displaying a ‘System Malfunction’ warning, and I could really use some insights from others who might have gone through this.

What Happened

Last week, out of nowhere, my dashboard lit up with a message saying that the pre-collision system was malfunctioning. At first, I thought it might just be a glitch, so I turned the car off and restarted it, but no luck. The warning persisted.

Understanding the Issue

From what I’ve gathered, the pre-collision system relies on various components, including sensors and cameras, to function properly. If something isn’t working correctly, it can cause significant problems not just with that feature, but potentially with overall safety features as well.

Questions I Have

  1. Is it safe to drive? - Should I continue using my car, or is it risky without this system functioning properly?
  2. Common Causes - What are common reasons for this type of malfunction? Any ideas on what could be causing it?
  3. Possible Solutions - Have any of you found effective solutions, whether it’s a DIY fix or tips for dealing with a dealership?

Support and Guidance

If anyone has experience with this situation, your advice would be greatly appreciated! I’m really hoping to work through this without too much hassle. Let’s share our experiences and help each other navigate these malfunctions!

4 Likes
2

I’ve been experiencing issues with my pre-collision system as well. The warning light comes on intermittently, usually when I’m in heavy traffic. Has anyone else noticed this?

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3

Yes! My warning light has been on for weeks, but the system seems functional otherwise. It’s confusing!

4

I had a bizarre experience where my car unexpectedly braked, even though there were no obstacles. It felt like a ghost driver took over!

5

That sounds alarming! I haven’t experienced it, but I read that slight sensor misalignment can cause that.

6

I think the pre-collision system relies heavily on sensors. When I had mine checked, the mechanic said dirty sensors can trigger false warnings.

7

I didn’t know that, @nicolerogers! I’ve tried cleaning mine, but still have issues. How often should they be cleaned?

8

I’ve faced problems too, but I wonder if it’s something specific to certain models. Anyone have a 2020 RAV4 and facing similar issues?

9

My 2020 RAV4 is acting up! The pre-collision doesn’t detect some pedestrians. It’s a bit scary sometimes, honestly.

10

That’s worrying! I think these systems need a software update. Did you check if yours is up to date?

11

I’ve heard that updates can fix a lot of glitches. I’m definitely going to check mine now. Thanks, @warrenbryan!

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12

Is there a common sign all of you are experiencing? I haven’t noticed my vehicle misbehaving—should I be concerned?

13

The common signs include warning lights and unexpected braking. It might be worth having your system checked out just to be safe, @christine13.

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14

I can’t help but wonder if my car is just playing games with me… or if my driving is scaring it. Haha!

15

I’ve been having issues with my pre-collision system as well. It’s frustrating when the alerts go off unnecessarily. Has anyone used a diagnostic tool to read error codes?

16

I’ve found that using an OBD-II scanner can really help identify whether there are any underlying error codes. I saw some references to specific Toyota codes, anyone know which ones to look for?

17

I didn’t even realize my scanner could pull those codes! I usually just plug it in for basic diagnostics. Do you know if the pre-collision system throws a specific code range?

18

Indeed, if anyone knows the specific codes, that would be helpful. I’m considering performing a mechanical inspection too, any tips?

19

When I tried to inspect my pre-collision system, I found that a dirty sensor was the issue. It’s surprising how much dirt can interfere with it! Has anyone else faced this?

5 Likes
20

Great tip! I often forget to check the sensors on my Toyota. It’d be nice to know the locations of these sensors for easy access.