Hyundai i30N – Low Tire Pressure Warning/TPMS Error

Generally speaking, my i30N has been a reliable performer in the ~6 months I have owned it so far.

However, I have had a few niggles, e.g. a piece of loose trim covering the wiring for the rear vision mirror, as well as an issue I blogged about with one of the exhaust valves failing and causing a rattling noise (read more here – this has now been fixed and I’ll post a more detailed update).

It has all been minor stuff so far … not “failure to start” issues.

A new issue has cropped up in the past week, one that is a bit annoying but once again not causing me any issue with actually using the car for day-to-day duties.

One morning (when the weather was cold outside) I got a “low tire pressure” warning on the front right tire. The TPMS light lit up and the mini LCD screen changed to the TPMS view to show the offending tire.

The pressure was reading 32 PSI on all four tires when stone cold, and when I checked the dealer recommended pressures on the wheel alignment sticker read 34 PSI (not sure if that is a common thing outside of New Zealand, but here a car dealer/tire shop will usually write on a little sticker your recommended wheel alignment interval, date and tire pressures)

I popped down to the petrol station and inflated all four tires to 34 PSI, as a cursory read online indicated that inflating the tires back up and driving for a while would fix the issue – it seems the i30N and many other modern Hyundais have no manual TPMS override/reset button or option.

I tried this, and it didn’t work. In fact, on the way home a second tire – front left – showed a TPMS/low pressure warning.

More research suggested over-inflating the tires past the manufacturer specification. I looked in the door sticker and found the recommended pressures (a bit higher than what the dealer recommended) and inflated 2 PSI past these, running about 38 PSI all around.

I then took the car for a 30 minute motorway drive, and still the TPMS warning stayed illuminated.

I’m going to give the car a bit longer to see if that helps, and then it’s another trip to the dealership if that doesn’t work. I’ll keep you posted. However, if you have any “hacks” for resetting the TPMS or getting it to go away, I’m all ears – leave a comment below.