227 Operation
Driving instructions
Hydroplaning
Depending on the depth of the water layer 
on the road, hydroplaning may occur, even 
at low speeds and with new tires. Reduce 
vehicle speed, avoid track grooves in the 
road and apply brakes cautiously in the 
rain.
Tire traction
The safe speed on a wet, snow covered or 
icy road is always lower than on a dry road.
You should pay particular attention to the 
condition of the road whenever the outside 
temperatures are close to the freezing 
point.Mercedes-Benz recommends M+S rated 
radial-ply tires with a minimum tread depth 
of approximately 
1/6 in (4 mm) on all four 
wheels for the winter season to ensure 
normal balanced handling characteristics. 
On packed snow, they can reduce your 
stopping distance as compared to summer 
tires. Stopping distance, however, is still 
considerably greater than when the road is 
not covered with snow or ice. Exercise ap-
propriate caution.
Warning!
G
Do not drive with a flat tire. A flat tire affects 
the ability to steer or brake the vehicle. You 
may lose control of the vehicle. Continued 
driving with a flat tire or driving at high 
speed with a flat tire will cause excessive 
heat build-up and possibly a fire.
Warning!
G
If ice has formed on the road, tire traction 
will be substantially reduced. Under such 
weather conditions, drive, steer and brake 
with extreme caution.
!Avoid spinning of a drive wheel. This 
may cause serious damage to the driv-
etrain which is not covered by the 
Mercedes-Benz Limited Warranty. 
247 Operation
Winter driving
Winter driving
Before the onset of winter, have your vehi-
cle winterized at an authorized 
Mercedes-Benz Center. This service in-
cludes:
Check of anticorrosion and antifreeze 
concentration.
Addition of cleaning concentrate to the 
water of the windshield and headlamp 
cleaning system. Add MB Concentrate 
“S” to a premixed windshield washer 
solvent / antifreeze which is formulated 
for temperatures below freezing point 
(page 338).
Battery test. Battery capacity drops 
with decreasing ambient temperature. 
A well charged battery helps to ensure 
that the engine can be started, even at 
low ambient temperatures.
Tire change. Mercedes-Benz recom-
mends M+S rated radial-ply tires with a 
minimum tread depth of approximately 1/6 in (4 mm) on all four wheels for the 
winter season.
Winter tires
Always use winter tires at temperatures 
below 45°F (7°C) and whenever wintry 
road conditions prevail. Use of winter tires 
is the only way to achieve the maximum ef-
fectiveness of the ABS and ESP in winter 
operation.
For safe handling, ensure that all mounted 
winter tires are of the same make and have 
the same tread design.Always observe the speed rating of the 
winter tires installed on your vehicle. If the 
maximum speed for which your tires are 
rated is below the speed rating of your ve-
hicle, you must place a notice to this effect 
where it will be seen by the driver. Such no-
tices are available at your tire dealer or any 
authorized Mercedes-Benz Center.
Warning!
G
Winter tires with a tread depth under 
1/6 in 
(4 mm) must be replaced. They are no long-
er suitable for winter operation.