The Mercedes, as with most vehicles, is equipped with a "check engine"
indicator light. It illuminates when something requires the attention of
a mechanic,
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or to remind you of periodic service needs. The light is designed to
come on when the vehicle passes certain mileage limits. You can reset
the "check engine" light on your Mercedes within a few minutes.
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Digiprog III BMW ICOM A3 Pro MB SD Connect 5 Digiprog III BMW ICOM A3
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Insert
the key in the ignition switch and turn it without starting the car. Pay
attention to the display on the instrument cluster between the
speedometer and the tachometer.
Press the lower left button on
the left side of the steering wheel. There are four buttons on the left
side of the steering wheel.
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After pushing the button, the display will reveal why the check engine
light is lit. Usually it indicates that the car is due for service. Push
the lower left button on the steering wheel again and the vehicle
mileage will show on the display.
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Digiprog III BMW ICOM A3 Pro MB SD Connect 5 Digiprog III BMW ICOM A3
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Press the lower right button on
the left side of the steering wheel. This will again show the reason why
the "check engine" light is on.
Locate the reset button on the
left side of the instrument cluster. Press the reset button and hold it
until the display reads "To reset: Press reset button for 3 seconds."
Push the reset button again and hold the button in until the display indicates that the system has been reset.
Digiprog III The display will also inform you of the next service date according to mileage.
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Digiprog III BMW ICOM A3 Pro MB SD Connect 5 Digiprog III BMW ICOM A3
Pro MB SD Connect 5 Digiprog III BMW ICOM A3 Pro MB SD Connect 5
Digiprog III BMW ICOM A3 Pro MB SD Connect 5 Digiprog III
Tips & Warnings
Take your Mercedes in for service when the "check engine" light comes
on. Sometimes the light will come on for a minor reason, but there is
always a chance of a bigger problem.
Have the car serviced before a small issue becomes a big problem.
The positive battery cable can be disconnected for 30 seconds to reset
the check engine light. This is not recommended because the code for the
problem will be erased.