Date of printing:01/23/2022
Online Owner's Manual [In depth | Wheels and tyres | Tyre pressure]
Owner's Manual version: 06-13
Note: The online Owner's Manual is the latest version available. Deviations between this manual and items specific to your vehicle may occur since Mercedes-Benz constantly adapts its vehicles to the latest technology and modifies design and equipment. Please note that this online Owner's Manual does not under any circumstances replace the printed Owner's Manual which is supplied with the vehicle.
Underinflated or overinflated tyres pose the following risks:
Observe the recommended tyre pressure and check the tyre pressure of all the tyres including the spare wheel:
If you fit unsuitable accessories onto tyre valves, the tyre valves may be overloaded and malfunction, which can cause tyre pressure loss. Due to their design, retrofitted tyre pressure monitors keep the tyre valve open. This can also result in tyre pressure loss. There is a risk of accident.
You will find a table of recommended tyre pressures inside the fuel filler flap beneath the fuel cap and in the "Tyre pressure table" section more. Tyre pressures are specified for different load conditions. These are defined in the table as different numbers of passengers and amounts of luggage.
|Partially laden vehicle|
|Fully laden vehicle|
The tyre pressure values for an unladen/laden vehicle depend on the permissible axle loads of the front and rear axles. You can find this data on the vehicle identification plate on the door frame of the driver's door more.
The tyres are cold:
Depending on the ambient temperature, the speed at which you are driving and the load on the tyres, the tyre temperature and thus the tyre pressure change by approximately 10 kPa per 10 (0.1 bar/1.5 psi). Take this into account when checking the pressure of warm tyres. Only correct the tyre pressure if it is too low for the current operating conditions.
Only correct the tyre pressures when the tyres are warm if:
the levels fall below the values stated in the tyre pressure table when the vehicle is laden and the temperature of the tyre is taken into account more .
Vehicles with a tyre pressure monitor are equipped with sensors in the wheels that monitor the tyre pressure of all four tyres. The tyre pressure monitor monitors the pressure in all four tyres; you set this pressure when you activate the tyre pressure monitor. The tyre pressure monitor warns you if the pressure drops in one or more of the tyres. The tyre pressure monitor only functions if the corresponding sensors are fitted to all wheels.
The tyre pressure monitor does not warn you if a tyre pressure is incorrect. Observe the notes on the recommended tyre pressure more.
The tyre pressure monitor is not able to warn you of a sudden loss of pressure, e.g. following penetration by a foreign object. In this event, brake the vehicle until it comes to a standstill. Do not carry out any sudden steering manoeuvres.
Only vehicles with steering wheel buttons: the on-board computer displays information on tyre pressures. After a few minutes of driving, the current tyre pressure of each tyre is shown in the on-board computer.
The tyre pressure values indicated by the on-board computer may differ from those measured at a filling station with a pressure gauge. The tyre pressures shown by the on-board computer refer to those measured at sea level. At high altitudes, the tyre pressure values indicated by a pressure gauge are higher than those shown by the on-board computer. In this case, do not reduce the tyre pressures.
If radio transmitting equipment (e.g. cordless headphones, two-way radios) is operated inside the vehicle or in the vicinity of the vehicle, this can interfere with the operation of the tyre pressure monitor.
Using the steering wheel buttons
If the tyre pressure monitor detects a significant pressure loss on one or more tyres, the tyre pressure loss warning lamp lights up in the instrument cluster more.
If the tyre pressure monitor detects a significant pressure loss on one or more tyres, the on-board computer displays a warning message. The tyre pressure loss warning lamp in the instrument cluster more lights up. A warning tone also sounds.
In most cases, the tyre pressure monitor detects the new reference values automatically, e.g. after you have:
Restarting the tyre pressure monitor (vehicles with steering wheel buttons):
The following tyre pressure values apply to vehicles with a permissible gross weight of:
Additional tyre pressure values for vehicles with a gross weight of 2.77 t: the following tyre pressure values only apply to vehicles with a permissible gross weight of 2.77 t and the permissible axle load of 1470 kg on the front and rear axles.
Additional tyre pressure values for vehicles with a gross weight of 3.05 t: the following tyre pressure values only apply to vehicles with a permissible gross weight of 3.05 t and the permissible axle loads of 1550 kg on the front axle and 1650 kg on the rear axle.
Tyre pressure values for vehicles with a permissible gross weight of 3.2 t: the following tyre pressure values only apply to vehicles with a permissible gross weight of 3.2 t and the permissible axle loads of 1550 kg on the front axle and 1700 kg on the rear axle. Note that the vehicle is restricted to a top speed of 180 km/h and that only tyre valves of type TR 600 should be used. Other tyre valves could be damaged, which may lead to loss of tyre pressure.