Turning the key to MAR the warning light on the dial turns on, but it should go off as soon as the engine is started.
If the 
warning light turns on when
the car is travelling (on certain versions together with the message on the display),
stop the engine immediately and contact a Fiat Dealership.
See also:
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s performance:
• The use of leaded gas is prohibited by Federal law.
Using leaded gasoline can impair engine performance and damage the ...
Environment and economy
The Fiat Doblò will be launched with four engines with 5 or 6 speed
gearboxes, all designed and made by FPT - Fiat Powertrain Technologies:
1.3 Multijet II 16v - 90 HP (Euro 4);
1.6 Multij ...
Digital display
“STANDARD” SCREEN fig. 38
The standard screen shows the following indications:
A - Headlight aiming position display (with dipped beam headlights on).
B - Clock (always displayed, also with key rem ...