Toyota iQ tire pressure ABS and steering issues

I've got a 2014 Toyota iQ, gasoline engine, with only 26,691 km on the clock. Recently the tire pressure low warning light came on. Now, I'm also experiencing the ABS lamp lighting up, the steering wheel is vibrating, and it feels like the power steering is failing, requiring much more effort to turn. I've checked the tire pressures with a gauge and they're definitely low. Anyone else had similar issues?

4 comment(s)

Hey there. I've got an iQ as well and that sounds awfully familiar. I had a very similar thing happen a while back. The low tire pressure warning was the first sign, followed by the other symptoms you described. Did you check for any obvious signs of punctures or damage to the tires themselves? Any hissing sounds that could indicate an air leak?

Thanks for the reply! I did a quick visual check, but didn't spot anything obvious like a nail or screw. I didn't specifically listen for hissing, but I'll definitely give that a try tomorrow. When you had this, was it something obvious once you found the cause, or did it take some digging?

In my case, it turned out to be a defective valve in one of the tires. It wasn't immediately apparent, but a closer inspection revealed a slow leak coming from it. Honestly, given all the symptoms, I'd recommend taking it to a workshop to get it properly checked out. It could be something simple, but it's better to be safe than sorry, especially with the steering issues.

Thanks for the advice, I appreciate it! I took it to a local workshop and you were spot on – defective valve. Cost me 280€ to get it sorted. All good now.

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