Can I Drive my Mercedes With Check Engine Light On?

Can I Drive my Mercedes With Check Engine Light On

The check engine light is a warning that your Mercedes has a problem. It can be useful for diagnosing problems, but it’s not a replacement for a mechanic or an auto repair shop.

The check engine light is also an indicator of the health of your car and the check engine light can be tricky to figure out if you don’t know what’s wrong with your car in the first place. So, can I drive my Mercedes with check engine light on?

Yes, you can drive your Mercedes with a check engine light on but not for too long, Once the check engine light is blinking on your Mercedes, you should take it to an auto shop for diagnosis and repair. 

What Causes Check Engine Light on Mercedes?

Causes of Check engine light on Mercedes include:

1. Problem with the Engine

The Check Engine Light comes on when a problem with the engine is detected. It can be caused by several issues, including a loose, damaged, or missing gas cap.

2. A Failed Emission Test

A failed emissions test can also cause the check engine light to come on (this usually happens when you’ve been driving an older car that doesn’t have catalytic converters).

3. Faulty Oxygen Sensor

When the check engine light comes on, the oxygen sensor could be faulty and need replacement.

The oxygen sensor measures the amount of unburnt oxygen in the exhaust system and when there’s a large amount of unburnt oxygen in the exhaust system, it causes the fuel to burn faster than it should and there’s low fuel economy.

When an oxygen sensor is faulty and is left unchecked for a while it can cause problems for the catalytic converter.

4. Bas Spark Plugs

The problem could also be from your spark plugs. The spark plugs usually do the work of igniting the air and fuel that has been mixed in the combustion chamber.

When the spark plugs are faulty or they’re worn out, it’ll cause the vehicle to experience a drastic reduction in power and poor performance.

Faulty spark plugs could cause the engines to experience difficulties in starting up, and when they’re left unchecked, they can cause damage to the oxygen sensor as well as the catalytic converter.

5. Mass Air Flow Sensor

When the mass airflow sensor is faulty and requires repair or replacement, it could trigger the check engine light to come on.

The mass airflow sensor does the work of calculating and determining how much fuel would be needed to help the engine run efficiently and effectively by measuring the amount of air that enters the engine.

When the mass air flow sensor is faulty, it causes the vehicle to experience rough idling and it’ll also have trouble starting.

6. Catalytic Converter

The catalytic converter is also one component of the vehicle’s exhaust system that could trigger the check engine light when a fault has been detected in it.

The catalytic converter normally converts the toxic air that comes out of the engines into the exhaust system to less harmful ones.

Whenever the check engine light comes on in your Mercedes, you should drive down to a repair shop to get it checked before any further damage is done.

Although most times when the check engine light comes on, it’s as a result of a loosely covered gas cap or maybe it’s broken or missing.

Can I Drive my Mercedes With Check Engine Light On?

Yes, you can drive your Mercedes with a check engine light on but its totally not a good idea.

You should avoid driving your Mercedes when the check engine light comes on and keeps blinking as you drive. You should take it to a mechanic or repair shop.

If you have an expensive car like a Mercedes and the check engine light is on, then it may be time for some maintenance work or even an engine replacement if there are many problems inside the vehicle.

How Long Can You Drive Your Mercedes With Check Engine Light On?

It is safe to drive your Mercedes with the check engine light on. However, you may want to get it fixed as soon as possible because if it continues to stay on for too long, you could end up losing your registration and getting fined by the DMV.

If you drive a Mercedes with a check engine light that only comes on when you’re running errands, then it might be okay to drive your car around town.

However, if the check engine light came on while driving and stayed on for days or weeks, then this could be an issue.

You must get to the mechanic as soon as possible so they can diagnose your problem and fix it before anything else happens.

What to Do When Mercedes Check Engine Light Comes On?

If you have a Mercedes and the check engine light comes on, there are a few things to consider:

  • You should check your gas cap first and make sure that it is covered rightly, make sure that the gas cap is placed properly and that it is tightly covered.
  • Also, you could check the engine oil level, the engine coolant level, and the engine belt tension. You could also do a quick check to be sure that the spark plug is still in a good condition.
  • Another thing you could do is to inspect for engine misfires (If applicable).

If you see any of these symptoms, take your car to an auto repair shop or dealership where they will be able to diagnose and possibly fix it for you quickly and at a reasonable cost.

What Happens if You Drive with Check Engine Light On Your Mercedes?

If you drive with the Check Engine Light on, your Mercedes may be damaged. This can be a costly mistake for both the car and its owner.

The first thing to note is that if you have a catalytic converter in your Mercedes and it fails because of this problem, then it will not pass emissions tests.

If the check engine light is on, it means there is a problem with your Mercedes. The most common problems found by Mercedes technicians are:

  • Engine misfiring
  • Spark plug fouling
  • Cylinder knocking

These problems are expensive to fix, which is why it is advised to drive to a repair shop when the check engine light comes on to avoid causing any further damage to the already malfunctioning parts(if there are any).

When a cylinder knocks, it means that so many other parts have already been malfunctioned or damaged.

It’s also important to keep in mind that any other components within these vehicles need regular maintenance too.


It’s important to remember that a Check Engine Light is not an indication of something wrong with your car. It simply means that there are problems with the engine, and you need to have it diagnosed by a mechanic before you drive again.

It is advised to see a mechanic or drive to a repair shop because the check engine light doesn’t specify which part is faulty or has a problem but a professional can do a thorough check and rectify the problem.