SMART forfour Operating Instructions Manual page 191

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Engine compartment
Checking the brake fluid
A constant fluid level is necessary to en
sure that the car's brake system remains
in perfect working order.
Accident risk!
If the boiling point of the brake
fluid is too low, vapour bubbles could
form in the brake system when the
brakes are subjected to high loads
(e.g. when driving down mountain pass
es). This will impair the effectiveness
of the brakes.
Have the brake fluid changed every two
years!
8 16 Routines
Check brake fluid level
Open the front lid.
Perform a visual check on
reservoir (A).
> The fluid level must lie between the
MIN and MAX marks.
>Important!
Have the brake fluid topped up only by a
qualified specialist workshop, e.g. a
smart center.
If the level is slightly below the MIN
mark, take your car to a qualified spe
cialist workshop, e.g. a smart center.
If the level is significantly below the
MIN mark, call a breakdown recovery
service, e.g. smartmove Assistance or a
qualified specialist workshop, such as
a smart center.