126nCoolant
Brake fluid
To add coolant
Wait until the engine cools before
removing the cap from the expansion
tank. The needle of the coolant gauge
in the instrument cluster must be
located in the blue field; otherwise,
there is a danger of scalding.
1. Turn the cap slightly counterclock-
wise in order to allow accumulated
pressure to escape, then open
2. If the coolant is low, slowly add
coolant until the correct level is
reached – do not overfill.
Z3 roadster 2.5i
Z3 roadster 3.0i, Z3 coupe 3.0i
If the warning lamp for the brake
hydraulic system comes on:
Brake fluid loss may result in extended
brake pedal travel. If this occurs, refer
to the notes on page 104.
The coolant is a mixture of water and
extended-duty antifreeze with corrosion
inhibitor. Always maintain the
The brake fluid level is too low, refer
also to the instructions on page 104.
For adding brake fluid or for deter-
mining and correcting the cause of
brake fluid loss, consult your BMW
center. Your BMW center is familiar
with the specifications for factory-
approved brake fluids (DOT 4).
Brake fluid is hygroscopic, that is,
it absorbs moisture from the air
over time.
prescribed all-season 50 :50 mixture
ratio for year-round protection against
internal corrosion. No other additives
are required.
In order to ensure the operating safety
and reliability of the brake system, have
the brake fluid changed every two years
by a BMW center, refer also to the
Service and Warranty Information
Booklet (US models) or the Warranty
and Service Guide Booklet (Canadian
models).
Replace the coolant regularly. Refer to
the Service and Warranty Information
Booklet (US models) or the Warranty
and Service Guide Booklet (Canadian
models).
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