Airbag front message
The worst 2017 Mercedes-Benz GLC problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
- Airbags3
- Engine3
- Body2
- Brakes2
- Fuel system2
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
- Airbags3
- Engine3
- Body2
- Brakes2
- Fuel system2
- Visibility2
- Driver assistance1
- Electrical1
- Seat belts1
- Transmission1
Recalls
No recalls on record for this model year.
Defect investigations
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at all frontal inflators using propellant 2004 that do not contain a "desiccant" (a substance that traps and holds moisture) in US vehicles are under recall. These "non-desiccated" inflators either have been or are required to be replaced.In some cases, the remedy part for these recalled inflators was, or will be, an inflator using either propellant 2004 or 2004L that does contain a desiccant. None of these "desiccated" remedy parts (which were installed in older model year vehicles) are currently under recall for a degradation concern. Certain subsets of desiccated PSAN inflators using propellant 2004 for use as original equipment, however, have been recalled for a degradation concern. All Takata inflators produced with propellant 2004L contain desiccant, and none of these desiccated inflators using propellant 2004L are under recall for a degradation concern. There have been no reported field ruptures in any non-recalled desiccated PSAN inflators.It is understood that desiccants fully saturate at some threshold, at which point any additional moisture will not be captured. This means the degradation process observed in non-desiccated inflators using propellant 2004 may also occur in non-recalled desiccated inflators using propellant 2004, assuming additional moisture enters the inflator and high temperature cycling occurs. Based on available information, desiccant saturation can occur within the first five years in the worst environments, and the time required for full saturation is affected by multiple factors. While no present safety risk has been identified, further work is needed to evaluate the future risk of non-recalled desiccated inflators using propellant 2004.Three entities -- Takata (now known as TK Global), the Independent Testing Coalition, and Exponent -- have been studying the long-term behavior of Takata desiccated PSAN inflators using propellant 2004L (as well as 2004) in the presence of moisture and temperature cycling. The research efforts, which include development of predictive modeling techniques and field sample analysis, are ongoing. To date, none of the researchers have identified field evidence showing that propellant 2004L is undergoing a degradation process that leads to aggressive deployment and potential rupture. However, the time in service of such inflators remains short compared to that of the inflators using propellant 2004. Further study is needed to assess the long-term safety of desiccated inflators using propellant 2004L.The Office of Defects Investigation is opening this investigation to examine whether a safety defect related to propellant degradation exists in non-recalled desiccated PSAN frontal inflators manufactured by Takata. This investigation will require extensive information on Takata production processes and surveys of inflators in the field. Lists of recall actions that may have used desiccated PSAN inflators as remedy parts, as well as the makes and models originally manufactured with them, is available with the downloadable version of this document (see -- note this information is subject to change/revision as the investigation proceeds). This investigation does not supersede EA15-001, which remains open.
EA21002
Technical service bulletins for the 2017 Mercedes-Benz GLC 102
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the...
- The Mercedes me connect services cannot be activated
- Visibility
- In the MBUX weather app, the temperature is displayed in the wrong unit (Fahrenheit instead of °C, or vice...
- Complaint
- Staining on door trim strips and top and bottom trim elements on rear side windows
- 1. Vibrations noticeable at steering wheel when front axle is excited when driving at a speed between 65...
- Staining on door trim strips and top and bottom trim elements on rear side windows
- Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position...
- Malfunction of the electric steering column adjustment
What 2017 Mercedes-Benz GLC owners say
Most recent owner complaints, unedited.
The contact owns a 2017 Mercedes Benz GLC300. The contact stated while driving approximately 55 mph, suddenly there was a loud sound and vibration coming from the vehicle. After stopping the vehicle, it was discovered that sections of the panoramic roof had separated and dislodged from the vehicle. The vehicle was taken to the local dealer who indicated that the vehicle was included in the federal safety agency recall campaign number 21V197000 (Structure) however, the part needed to repair the vehicle was not yet available. The manufacturer was notified of the failure. The failure mileage was 62,000.
Fuel line leak: the temperature in s. Florida hit a low of 45 degrees tonight on 1 dec 2020, first noting the issue described. Upon return home from an 8 mile total trip to the store, my daughters exited the vehicle and noted a strong gasoline odor. Upon investigation myself, I found gasoline pooling behind the engine where the main fuel line connects to a rubber hose. The pooling was on the rear of the undercarriage cover as also described below. Similar case found online: https://www.benzworld.org/threads/gasoline-leak.2936569/ "there is a fuel leak where the steel line from the tank connects to a rubber hose near the firewall. There is apparently a revised fuel line connector available, no recall as yet. This joint is apparently part of the low-pressure fuel system (4 bar), not the high-pressure side (200 bar)."
I had an accident and rearendead another ca. However my airbags didn't deployed.
The panoramic sunroof exploded outward. I was driving at highway speed. This is the second time that this has happened on this vehicle
When the vehicle is in motion(various speed, 1 time at highway, 2 times local streets), the fasten seatbelt light and audible warning came on. Also, at the same time, the seatbelt tensions (pulls). The driver seatbelt was fastened the whole time while this was happening.
Feed line to high pressure fuel pump leaking to engine compartment causing odor when starting in cold weather (vehicle stationary). Has been happening for a long time but simply did not connect the dots.
Since the lease purchase in 2017. The glc300 has been in service on a quarterly bases for the brakes (constant squeaking making feel unsafe) and now a constant check engine light. This is the 4th vehicle I lease and by far the worst. I contacted mercedes USA asking them for a replacement vehicle. I was willing to accept a used or loaner car but the only thing they offered was $1000 towards my next vehicle. As of today, the vehicle is back in service for the 7th or 8th time. I am hoping someone can help or at least prevent this from happening to someone. I have attached all paperwork for your review. Thank you
"takata recall" my 2017 mercedes glc 300 SUV caught randomly on fire while driving 65 MPH on the freeway. I was able to pull on the side.then while on the phone describing the situation to the service guy; I saw the fire and smoke entered inside the vehicle and I got out after a little bit cause the car had no power to open doors or do anything! I think the problem was with electricity! I want the car no more! I will return it back!
We were driving down the freeway, traveling approximately 65 MPH in oakland, ca. The weather was clear - no rain and approximately 60 degrees. All of a sudden, there was a loud noise like a gunshot and our panaramic sunroof shattered. At the time, we had a cargo box on top of the car (on a frame that was not touching the sunroof) so it is unlikely any projectile could have hit the car. The cargo box was still affixed to the car and secure after the incident. It was not an extreme temperature, nor was there any extreme weather (rain, snow, hail) at the time. There were no underpasses nearby. Most of the glass was caught by the sunshade, but if we had the sunshade open, the glass would have entered the passenger compartment. We have owned the car approximately two weeks at this time.
Compare the 2017 Mercedes-Benz GLC
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Questions about the 2017 Mercedes-Benz GLC
Is the 2017 Mercedes-Benz GLC reliable?
Owners have filed 13 complaints about the 2017 Mercedes-Benz GLC, 4.3 times a typical GLC model year.
What is the most common problem with the 2017 Mercedes-Benz GLC?
Airbags, with 3 complaints. Next is engine (3).
How many recalls does the 2017 Mercedes-Benz GLC have?
No recalls on record.
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