Tire Pressure Display
Super Member
Joined: Nov 2017
Posts: 669
Likes: 142
From: Hermosa Beach, California
2018 E400 Coupe
You get a warning on the dash if the tire pressure drops too low. I manually check my tires every couple of weeks with a good gauge as the readings from the sensors aren't all that accurate.
Super Member
Joined: Jul 2019
Posts: 677
Likes: 126
From: South Carolina
2020 MB E450 Estate, 2019 Kia Niro Touring
Mine have always been within 1 psi of my quality digital gauge. Maybe they're both a little off, but they've very consistent, and that's the main thing.
MBWorld Fanatic!
Joined: May 2018
Posts: 3,048
Likes: 905
From: Long Island, NY
2019 E 450, 2016 E350 4matic (retired), 2018 Ford Edge Sport, 2008 Porsche Boxster
I periodically check my readings with a good digital pressure gauge. The TPS is always within 1 PSI so I agree with rraisley that it is quite accurate. FYI, I also keep my pressure at 10% above recommended, 35 PSI.
Remember you have to drive for a least 1/4 mile to get a reading: I also like the temperature function: you can see how temperature affects pressure - both hot and extreme cold! It is fun on a summer day to watch the pressure rise from a "cold" (outside temp at 75) with a PSI of 35 to over 40 when you are on the interstate driving 75 mph and equally fun to watch leaving NY at 35 degrees and 35 PSI and the next morning in Vermont it being -5 and the PSI has dropped to about 30 and then as you drive and the temp in the tires return to 35 degrees you are back up to 35 PSI!
So yes I find the TPS very accurate - surprisingly so!
Remember you have to drive for a least 1/4 mile to get a reading: I also like the temperature function: you can see how temperature affects pressure - both hot and extreme cold! It is fun on a summer day to watch the pressure rise from a "cold" (outside temp at 75) with a PSI of 35 to over 40 when you are on the interstate driving 75 mph and equally fun to watch leaving NY at 35 degrees and 35 PSI and the next morning in Vermont it being -5 and the PSI has dropped to about 30 and then as you drive and the temp in the tires return to 35 degrees you are back up to 35 PSI!
So yes I find the TPS very accurate - surprisingly so!
