Tire pressure warning
Thread Starter
Member
Joined: May 2003
Posts: 186
Likes: 12
Tire pressure warning
Got the low tire pressure warning, but the displayed number was 41 (one psi below the number on the A pillar)
Kept on driving, and as expected, with the heat, pressure went up to 42 psi both front tires but the warning persisted.
Will wait until the morning and see if the warning goes away.
Anyone seen this?
Kept on driving, and as expected, with the heat, pressure went up to 42 psi both front tires but the warning persisted.
Will wait until the morning and see if the warning goes away.
Anyone seen this?
Member
Joined: Jan 2022
Posts: 137
Likes: 22
From: Western North Carolina
2022 EQS 450+, 2020 C300 Cab, 2019 Jeep GC
It does seem to be quite sensitive to pressure changes but once I added air, the warning went away. While the warning was on did you also get alerts that some of the driver assist functions were not available? They seem to be linked.
Thread Starter
Member
Joined: May 2003
Posts: 186
Likes: 12
I think I may have problem with calibration because this morning I inflated the tires, and now I have different readings between the app and my trusted gauge.
MBWorld Fanatic!
Joined: Dec 2006
Posts: 6,494
Likes: 334
From: Europe
223.168 & 213.012 & 906.633 & 214.005
Latest Mercedes cars are quite clever and detect automatically tyre changes (like changing between winter and summer tyres). They detect tyre inflation but not necessary adjust the warning threshold automatically if you decrease pressure at some point. I'd reset TPMS after any tyre change or tyre pressure update. You should find the reset option from the cluster service menu.
Thread Starter
Member
Joined: May 2003
Posts: 186
Likes: 12
Is it a significant difference? No difference before inflating tyres? Sounds odd. A small difference between the sensor readings and the gauge is normal (the gauge may be more off than the sensors but the sensors are neither absolutely accurate and they do not need to be).
Latest Mercedes cars are quite clever and detect automatically tyre changes (like changing between winter and summer tyres). They detect tyre inflation but not necessary adjust the warning threshold automatically if you decrease pressure at some point. I'd reset TPMS after any tyre change or tyre pressure update. You should find the reset option from the cluster service menu.
Latest Mercedes cars are quite clever and detect automatically tyre changes (like changing between winter and summer tyres). They detect tyre inflation but not necessary adjust the warning threshold automatically if you decrease pressure at some point. I'd reset TPMS after any tyre change or tyre pressure update. You should find the reset option from the cluster service menu.
Specified : 41 R, 48 R.
Yesterday: tire warning on dashboard and app.
Today: only warning on dashboard.
I did take the car out for a spin after the inflation.
My Honda would have corrected by now.
Trending Topics
MBWorld Fanatic!
Joined: Dec 2006
Posts: 6,494
Likes: 334
From: Europe
223.168 & 213.012 & 906.633 & 214.005
Perhaps you have not deleted the cluster warning after the first occurrence? Not sure if it should clear from the cluster too once the warning conditions do not apply any more.
MB World Stories
The Best of Mercedes & AMG
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke
Verdad Gallardo
8 Mercedes Models With Poor Reliability Records
Verdad Gallardo
Thread Starter
Member
Joined: May 2003
Posts: 186
Likes: 12
Thanks for all the inputs. Much appreciated.
After struggling with this for 2 days, I brought the car to the dealership today.
They found a few error codes, which they attributed to the critical 12 V battery state that I had when the car was at the tint shop for PPF. The shop had opened the hood and that caused the 12 V battery problem. Somehow, in some way, the car was not able to reset the tire warning despite appropriate psi.
By the way, to manually reset the tire pressure warning, press the home button on the steering wheel, scroll the odometer view all the way to the right where you see Service. Select this and so on.
After struggling with this for 2 days, I brought the car to the dealership today.
They found a few error codes, which they attributed to the critical 12 V battery state that I had when the car was at the tint shop for PPF. The shop had opened the hood and that caused the 12 V battery problem. Somehow, in some way, the car was not able to reset the tire warning despite appropriate psi.
By the way, to manually reset the tire pressure warning, press the home button on the steering wheel, scroll the odometer view all the way to the right where you see Service. Select this and so on.
