Tire Pressure Reading on Service Menu
Thread Starter
Junior Member
Joined: Aug 2019
Posts: 17
Likes: 9
From: Kentucky
2019 GLC300W4
Tire Pressure Reading on Service Menu
Has anyone correlated the tire pressure reading on the service menu to actual pressure measurements at each wheel?
I am finding that if I set all tires to 34 psi with a digital gauge, the readings on the display are all different (33, 34, 35,...).
It seems that the right front wheel always shows lower than the rest of the four.
Is there a way to calibrate the sensors in the wheels?
I am finding that if I set all tires to 34 psi with a digital gauge, the readings on the display are all different (33, 34, 35,...).
It seems that the right front wheel always shows lower than the rest of the four.
Is there a way to calibrate the sensors in the wheels?
Member
Joined: Sep 2020
Posts: 240
Likes: 43
From: Wyoming
2020 GLC 300 SUV 4Matic
Has anyone correlated the tire pressure reading on the service menu to actual pressure measurements at each wheel?
I am finding that if I set all tires to 34 psi with a digital gauge, the readings on the display are all different (33, 34, 35,...).
It seems that the right front wheel always shows lower than the rest of the four.
Is there a way to calibrate the sensors in the wheels?
I am finding that if I set all tires to 34 psi with a digital gauge, the readings on the display are all different (33, 34, 35,...).
It seems that the right front wheel always shows lower than the rest of the four.
Is there a way to calibrate the sensors in the wheels?
The system checks the tire pressure and the tire temperature of the tires installed on the vehicle by means of a tire pressure sensor.
Only correct tire pressure when the tires are cold.
Conditions for cold tires: The vehicle has been parked with the tires out of direct sunlight for at least three hours. The vehicle has traveled less than 1 mile
Tires:
- Restart the tire pressure loss warning
system (/ page 466)
- Check the tire pressure with the tire pressure
monitor (/ page 464)
- Restart the tire pressure monitor
(/ page 465)
You can reset tire pressure by pressing home button on left steering wheel. scroll down to Service menu, scroll down to the tire pressure sub menu, then scroll down to the message stating Use current pressures as new reference values, confirm with OK (if you are happy with pressure readings).
You will get a message saying tire press monitor has been reset. See page 465 in your manual.
Member
Joined: Sep 2020
Posts: 240
Likes: 43
From: Wyoming
2020 GLC 300 SUV 4Matic
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Thread Starter
Junior Member
Joined: Aug 2019
Posts: 17
Likes: 9
From: Kentucky
2019 GLC300W4
I'm not sure how the gauge can be wrong.
I measure all four wheels with the same gauge and set all pressures the same (34psi) while cold, first thing in the morning. The gauge is able to display within 0.5 psi.
When I reset the tire measurement system in the MFI, right front does not change while driving, left front and right rear increase in pressure as heat builds up, and left rear is some where between.
I'm getting ready for new tires soon and will have them check the sensors in the tires, if they can.
I measure all four wheels with the same gauge and set all pressures the same (34psi) while cold, first thing in the morning. The gauge is able to display within 0.5 psi.
When I reset the tire measurement system in the MFI, right front does not change while driving, left front and right rear increase in pressure as heat builds up, and left rear is some where between.
I'm getting ready for new tires soon and will have them check the sensors in the tires, if they can.
