The check engine light in a car can be triggered by any number of reasons- malfunctioning ignition system being the prime one. Therefore, if your Mercedes-Benz check engine light is illuminating, the first thing you should do is to check its spark plugs. If the spark plug and other ignition system components are working fine, call your mechanic right away so that the issue can be diagnosed further.

1. What Does Your
Mercedes-Benz
Check Engine
Light Mean?

2. ‘Check Engine Light’
(CEL) or ‘Malfunction
Indicator Lamp’ (MIL) is a
warning sign.

3. On-board diagnostic
system uses this light to tell
you that get your car
checked out.

4. Listed below are a few
reasons why your
Mercedes CEL may come
on.

5. Mercedes-Benz
check engine light
Flashing- Causes

6. Failing Ignition
System

7. Flawed ignition system
components can prompt
the ECU to turn on CEL in
your car.

8. If you don’t address the
issue on time, you might
end up damaging the
engine.

9. Incorrect Air-To-Fuel
Ratio

10. Another major reason why
your CEL may come on is-
the abnormal air-to-fuel
ratio.

11. Ignoring this issue might
adversely affect your
Mercedes fuel economy.

12. Issues With The
Exhaust System

13. The exhaust system serves
to remove the byproducts
of the engine operation.

14. Additionally, it makes
sure that your car engine
is breathing smoothly.

15. Increased back-pressure
due to a faulty exhaust
system can persuade the
ECU to turn on the CEL.

16. Malfunctioning Sensors
And ECU

17. The ECU employs an
array of sensors to
regulate different
aspects of the engine
operation.

18. If anything goes wrong
with it, you may expect
your car CEL to come on.

19. Failing Emission Control
System

20. Another major reason
why your CEL may come
on is- a malfunctioning
emission control system.

21. If you don’t fix the problem
on time, your Mercedes
might fail an emission test.

22. Summing Up

23. Lit-up CEL in your
Mercedes-Benz is
essentially a sign of
trouble.

24. Triggered by the onboard
computer, CEL warns you
that there's something
wrong with your car.

25. All you have to do is to
call your mechanic so
that the exact issue can
be diagnosed.

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