Mercedes-Benz GLC350e Check Engine Light is on Inspection at your home or office.

Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

Estimate price near me

Service Location

Customer Ratings

(251)

How A Diagnostic Works

Instantly book a certified mobile mechanic to come to you

Mechanic diagnoses the problem and quotes necessary repairs

Your vehicle is ready to go

Fair, upfront & transparent pricing for all services

Our certified mobile mechanics can come to you now.

Customer Ratings

(251)

Check Engine Light is on Inspection Service

How much does a Check Engine Light is on Inspection cost?

On average, the cost for a Mercedes-Benz GLC350e Check Engine Light is on Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2019 Mercedes-Benz GLC350eL4-2.0L Turbo HybridService typeCheck Engine Light is on InspectionEstimate$114.99Shop/Dealer Price$124.99 - $132.49
2021 Mercedes-Benz GLC350eL4-2.0L Turbo HybridService typeCheck Engine Light is on InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2020 Mercedes-Benz GLC350eL4-2.0L Turbo HybridService typeCheck Engine Light is on InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2018 Mercedes-Benz GLC350eL4-2.0L Turbo HybridService typeCheck Engine Light is on InspectionEstimate$94.99Shop/Dealer Price$104.99 - $112.48
Show example Mercedes-Benz GLC350e Check Engine Light is on Inspection prices

The Check Engine Light can be one of the most confusing warnings in your dashboard cluster because it offers no explanation as to why you suddenly need to check your engine. It sounds ominous and can be as serious as a malfunctioning catalytic converter or as trivial as a loose gas cap.

How this system works:

The Check Engine Light location and color will vary by vehicle, but in most cases it is a dashboard warning light that is yellow and shaped like an engine. It may or may not have the word “check” integrated into the design.

This indicator is part of the onboard diagnostics (OBD-II) system and in all cases it indicates a problem with your emissions system. Basically, it is an emissions monitoring system. A Check Engine indicator will stay solid or blink.

  • If the indicator is blinking, the situation is usually serious, such as a severe misfiring of the engine. This would allow unburned fuel to dump into the exhaust system, pushing the temperature of your catalytic converter to the breaking point. Slow the car down, find a safe place to stop, and request a mechanic to perform a diagnosis.

  • A steady light on the other hand is not an emergency situation. You can continue driving, but you should schedule an appointment with a mechanic as soon as possible.

Common reasons for this to happen:

While a Check Engine Light can come on for a number of reasons, in most cases it is due to one of the following issues:

  • Loose or damaged gas cap: It’s hard to believe that a gas cap can prompt your check engine light to come on, but it can. Your gas cap acts as the seal for your fuel system and it helps maintain the pressure in your fuel tank. A loose or damaged cap can reduce your gas mileage and increase emissions from your car.

When that annoying yellow light pops on, the first thing you should do is pull over and inspect your gas cap. If it is loose, a quick tighten could very well solve your problem. If it is damaged, head to your local auto parts store for a new one.

Once you have fixed the issue, continue driving to see if the check engine light turns off. If the light stays on, schedule an appointment with a mechanic.

  • Faulty oxygen sensor: An oxygen sensor monitors the exhaust for unburned oxygen, which indicates engine efficacy and the proper air-to-fuel ratio. If you have a faulty sensor, it will not provide the correct data to the onboard computer. The majority of vehicles have two to four sensors. The OBD II code will tell the mechanic which one is giving a reading that is outside of its parameters.

Deterioration of the precious metals inside the oxygen sensor affects the sensors’ ability to give an accurate reading. If you put off getting an oxygen sensor replaced, it will eventually damage your catalytic converter, which can be very costly to replace. Your best bet is to call a mechanic and get a proper diagnosis.

  • Failing catalytic converter: A catalytic converter helps reduce emissions in the exhaust gases. It converts the carbon monoxide and other harmful gases into less harmful emissions. A failing converter will negatively affect your gas mileage and when the damage becomes severe enough, your vehicle won’t go any faster when you push down harder on the gas pedal.

In most cases, a catalytic converter will not fail if you properly maintain your car. A failing converter can be the result of a faulty oxygen sensor that has not been replaced or any other engine efficacy issue.

A broken catalytic converter will eventually bring your car to a complete stop. Before that, your gas mileage will be horrid, the car will not run smoothly, and the car will not pass an emissions test. A damaged converter should be replaced immediately.

  • Faulty mass airflow sensor: This part directs the computer in your vehicle to add the correct amount of fuel based on the air that is coming through the engine. When a mass airflow sensor starts to fail, the car will stall, it will idle poorly, the emissions will go up, and your gas mileage will go down.

An air filter that has never been replaced or improperly installed can sometimes be the culprit when it comes to a faulty mass airflow sensor. Have your air filter checked and replaced on a yearly basis.

While it is possible to drive for months with a malfunctioning mass airflow sensor, it’s not a good idea. Your gas mileage will drop and the car will start stalling frequently. It is best to call a mechanic and have the sensor diagnosed and replaced if necessary.

  • Bad spark plugs and wires: A spark plug acts as a seal in the combustion chamber and provides the gap for the spark that causes combustion in the engine.


While newer cars can go 100,000 miles on a set of plugs, older vehicles, especially those built before 1996, require new plugs roughly every 30,000 miles. There is no way to prevent plugs from failing, it just happens over time. If spark plugs are your issue, get them replaced immediately. A mechanic can make quick work of the job and new plugs in most cases are very affordable.

What to expect:

A top-rated mobile mechanic will come to your home or office to identify the source and cause of the illuminated Check Engine Light, and then check other system components as specific symptoms and issues are identified.

After the inspection, the mechanic will provide a detailed report that describes the diagnosis, along with the scope and cost of the necessary repairs.

How it's done:

When the Check Engine Light is on, your car’s monitoring system will have "fault codes" that indicate the nature of the problem. Your car may have one or more problems and hence there can be multiple codes.

The mechanic will read the codes using a scanner, interpret the codes, and provide a diagnosis. If you approve the repair estimate, they will replace the faulty part(s), clear the memory of any fault codes, turn the Check Engine Light off, and let you drive the car for a few days to see if the light comes back on or not.

Please note: It may take several days of driving the car for the monitoring system to verify that the repair has fixed all the problems. If the monitoring system fails any of its internal tests, it will turn the light back on. This means that the car has more problems that were not evident during the first evaluation. The mechanic will have to perform further diagnosis and create new repair estimates for resolving the problems found. In some rare cases, multiple visits may be required to diagnose and resolve the stubborn Check Engine Light issues.

How important is this service?

A blinking Check Engine Light indicates a critical issue, whereas a solid light reflects a non-emergency situation. Once you rule out a loose gas cap, it’s imperative a mechanic diagnoses the issue as soon as possible.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(251)

Rating Summary
230
12
1
0
8
230
12
1
0
8

Brikk

18 years of experience
389 reviews
Brikk
18 years of experience
Mercedes-Benz S550 V8-5.5L - Check Engine Light is on - Charlotte, North Carolina
Normally I do not confess to auto techs that I spent 40 years as a GM Service Manager and Service Advisor. BUT, Brikk was so pleasant and likable, our conversation was that of cars. He not only fixed my problem, but was sure to check other items on my car that I had not complained about. As I always tell everyone, there is but one thing that surpasses great customer service, and that is MORE of it...Thank you Brikk for a job well done, and if I ever need your service again, consider your phone ringing...Thanks

Peter

43 years of experience
1321 reviews
Peter
43 years of experience
Mercedes-Benz C230 L4-2.3L Turbo - Check Engine Light is on - Peoria, Arizona
Very Knowledgeable on every aspect of German cars.

Stephen

19 years of experience
18 reviews
Stephen
19 years of experience
Mercedes-Benz ML350 V6-3.5L - Check Engine Light is on - Las Vegas, Nevada
He is very knowledgeable and kind

Grzegorz

41 years of experience
473 reviews
Grzegorz
41 years of experience
Mercedes-Benz SLK350 V6-3.5L - Check Engine Light is on - San Francisco, California
Very knowledgeable and fast worker.

Excellent Rating

(251)

Rating Summary
230
12
1
0
8
230
12
1
0
8
Number of Mercedes-Benz Check Engine Light is on Inspection services completed
2761+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

Veteran and Military Driver Laws and Benefits in Arizona
The The state of Arizona offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the past, or are current active military members. Vehicle registration benefits Residents on active duty...
How to Replace a Canister Purge Solenoid
The canister purge solenoid prevents harmful vapor from releasing into the atmosphere. A faulty solenoid will not allow you to pass an emissions test.
B2104 OBD-II Trouble Code: Door Passenger Key Cylinder Switch Failure
B2104 trouble code means there's a failure in the passenger door key cylinder switch, caused by a failed component in the switch.

Car shaking more the faster I get

Several ideas come to mind. Tire issues sometimes manifest themselves as speed related issues. Out of balance tires will vibrate the faster you go. Also tires that are separated or have flat spots will do the same. If the condition...

My 2011 Acadia is leaking engine oil. Above the drain plug is wet- it's dripping off the drain plug

Oil leaking above. the oil pan can be coming from a number of places depending on how far above the pan, the oil is leaking from. The oil pan gasket, timing cover gasket/seal, or even the oil pressure switch are...

My car accelerates on its own and rpm goes high anf it happens for like 4 secs then goes back to normal

It is possible that your throttle cable could be getting stuck causing the throttle to stay open. I would recommend visually inspecting the cable and lubricating it if necessary to resolve this issue. If this does not fix the problem,...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com