Purity
Assuring the purity of DEF is particularly important with respect to avoiding malfunctions in the exhaust gas aftertreatment system.
If DEF is pumped out of the DEF tank, e.g. during repair work, it must not be returned to the tank. The purity of the fluid can no longer be guaranteed.
Impurities in DEF (e.g. due to other
service products, cleaning agents or dust)
lead to:
• increased emission values
• damage to the catalytic converter
• engine damage
• malfunctions in the BlueTEC exhaust gas aftertreatment system
See also:
Storing and maintaining the current
speed
You can store the current speed if you are
driving faster than 20 mph (30 km/h).
Accelerate the vehicle to the desired
speed.
Briefly press the cruise control lever
up 1 or down 2.
Remove ...
Low-beam headlamps
•► To switch on the low-beam headlamps:
turn the SmartKey in the ignition lock to
position 2 or start the engine.
•► Turn the light switch to .
The indicator lamp in the instrument
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Safety & Features
The S-Class has not been crash-tested by the Insurance Institute for Highway
Safety. Standard safety features include eight airbags, an electronic stability
system and antilock brakes. Click here ...