BMW Z4 ROADSTER Owner's Manual page 305

NOTICE
Too much water reduces the cooling and an-
tifreeze properties of the coolant. There is a
risk of damage to property. Use a 50:50 mix-
ing ratio of water to coolant additive.
Coolant level
General information
Depending on the motorization, there are up to
two coolant reservoirs in the engine compart-
ment. Check and add the coolant levels on a
regular basis.
The coolant may be overfilled in the coolant
reservoir when the vehicle is delivered from the
factory. Run longer to achieve the normal cool-
ant level.
The coolant level is indicated using the maxi-
mum mark in the filler neck of the coolant res-
ervoir.
Additional information:
For an overview, refer to page 297.
Checking the coolant level
1. Let the engine cool down.
2. Opening the hood.
Opening, refer to page 298.
3. Turn the lid of the coolant reservoir slightly
counterclockwise to allow any excess pres-
sure to dissipate, then open it.
4. Open the coolant reservoir lid.
Online Edition for Part no. 01405A88B63 - VI/23
Operating materials
5. The coolant level is correct when it is just
below the maximum mark in the filler neck.
6. Close the lid.
Adding coolant
1. Let the engine cool down.
2. Opening the hood.
Opening, refer to page 298.
3. Turn the lid of the coolant reservoir slightly
counterclockwise to allow any excess pres-
sure to dissipate, then open it.
4. Open the coolant reservoir lid.
5. If the coolant is low, slowly add coolant up
to the specified fill level; do not overfill.
6. Close the lid.
7. Have the cause of the coolant loss elimi-
nated as soon as possible.
Disposal
Comply with the relevant environmen-
tal protection regulations when dispos-
ing of coolant and coolant additives.
Washer fluid
General information
All windshield washer jets are supplied from
one tank.
Use a mixture of tap water and windshield
washer concentrate. If desired, a windshield
MOBILITY
305
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