Regular checks, Check regularly and before a long trip – Mercedes-Benz E-Wagon 2007 Owners Manual User Manual
Page 323
 
322
Operation
At the gas station
̈
Replace fuel cap by turning it clockwise 
until it audibly engages.
̈
Close the fuel filler flap.
Check regularly and before a long trip
1 Windshield washer system and head-
lamp cleaning system*
2 Brake fluid 
3 Coolant level
Windshield washer system and 
headlamp cleaning system*
For information on refilling the reservoir, 
see “Windshield washer system and head-
lamp cleaning system*” (
Brake fluid
For information on brake fluid, see “Fuels, 
coolants, lubricants, etc.” (
i
Leaving the engine running and the fuel cap
open can cause the yellow fuel tank reserve 
warning lamp to flash and the malfunction indi-
cator lamp
? (USA only) or the malfunction
indicator lamp
± (Canada only) to illuminate.
For more information, see also “Practical hints” 
(
i
Only use premium unleaded gasoline with a
minimum Posted Octane Rating of 91 (average of 
96 RON/86 MON). Information on gasoline 
quality can normally be found on the fuel pump.
For more information on gasoline, see the 
Factory Approved Service Products pamphlet 
(USA only) or contact an authorized 
Mercedes-Benz Center. 
i
Opening the hood, see (
!
If you find that the brake fluid in the brake
fluid reservoir has fallen to the minimum mark or 
below, have the brake system checked for brake 
pad thickness and leaks immediately. Notify an 
authorized Mercedes-Benz Center immediately. 
Do not add brake fluid as this will not solve the 
problem. For more information, see “Practical 
hints” (
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