If the TPMS light on your Mercedes-Benz dashboard stays on, it means that at least one of your tires has low air pressure.
tire pressure gauge and make sure that the pressure is at least 36 PSI. Check air pressure on all four tires plus the spare. What is the recommended Mercedes-Benz tire pressure?
Required tire pressure Mercedes-Benz C-Class
Most Mercedes-Benz vehicles require 36 PSI on the front tires and between 36 PSI and 45 PSI on the rear tires. This applies to all models: an A, C, E, S, GLE, GLS, ML, GL, G class, etc.
Recommended tire pressure Mercedes E-Class
How do you check Mercedes's tire pressure?
To check Mercedes tire air pressure, you will need a
tire pressure gauge.
Remove the small cap from the valve stem. Place your tire pressure gauge on the valve stem.
On mechanical gauges, the shaft will come out and show the current tire pressure.
On electrical gauges, the current tire air pressure will show on the small screen.