The contact owns a 2009 Mercedes-Benz C300. The contact stated that while starting the vehicle, the check engine, seat belt, and air bag warning lights illuminated. Additionally, the headlights and navigation lights failed to activate for a while. There was burning odor inside the vehicle with the heat activated or turned off. The contact also stated the vehicle failed to start for three days before eventually being able to start. The contact attempted to charge the battery, which resulted in a visible spark. The vehicle was taken to a dealer where it was diagnosed with a sound module and the Signal Acquisition Module (SAM) failures. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 217,000.
Mercedes Benz C300 airbag light comes on
85 of the 1,248 owner complaints about the Mercedes Benz C300 describe airbag warning light, most of them for the 2008 model year.
- owner complaints
- 85
- worst model year
- 2008
- typical repair cost reported
- $1,000
- typical mileage
- 77,000
By model year
Often reported together
Seat belt 10Headlights 4Check engine light 4Won't start 3ABS 3Stalling 2Warning lights 1
What owners say
The contact owns a 2009 Mercedes-Benz C300. The contact stated that while driving at an undisclosed speed, the "SRS System Requires Service" was displayed. The air bag and check engine warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the vapor canister shutoff valve but had not provided a diagnosis for the SRS system. The vehicle was repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 99,000.
The contact owns a 2008 Mercedes-Benz C300. The contact stated after the vehicle was taken to the dealer for an unknown recall repair, the air bag warning light remained illuminated. The contact also became aware that the driver’s side headlight was inoperable. The vehicle was taken back to the dealer where it was diagnosed with a detached headlamp wiring harness. The dealer recommended that driver’s and passenger’s side headlamps be replaced. Additionally, the taillights remained illuminated after turning off the vehicle. The vehicle was not repaired. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was unknown.
Car has been in and out of the shop. Initially I have been contacting Mercedes about airbag messages and continued message of SRS Malfunction on dashboard. Airbags had been recalled and supposedly replaced on multiple occasions. This SRS continues to remain even after repair or being seen for this issue only for other components to have failed and me having to pay for those in the process. The SRS Malfunction remains an issue until the next issue is affected. Recently an entire Electronic SAM Module Component was replaced as the culprit only to have more issues and the SRS remained. Mercedes has contended that each time they saw the vehicle the the SRS Malfunction was not the problems while other documents were repaired such as battery and SAM. In the meantime since then the car has stalled, components that were working are no longer inoperable. There was a recall that was applied to only specific vehicles of my model year which state the SRS Malfunction was to be replaced and made whole. I never received one of those notices and I will note that my vehicle obviously was affected and should also have this component replaced as it fits the same model year and make of the issues Mercedes has repaired already on affected vehicles. This issue has been on going for several years and Mercedes has failed to rectify this component that makes it dangerous and causes safety concerns for us with the understanding that their note on their website about the SRS Malfunction appeared to me a cop out for them to not be responsible for the fix and recall thsr may have affected more vehicles than its originally accessed number. Instead of fixing this issue they continually find other repairs they indicate as the issue only to end up right back with the same SRS Malfunction and stalling issues with vehicle once again and want to use excuse of car's age as issue and failing to acknowledge and address the SRS Malfunction. Your system would not allow file upload. I can still provide
After repair done on the confirmed recall airbag computer/module my vehicle became immobile, malfuctioned. The vehicle warning lamps alerted the airbag malfunctioned, srs malfunction. I seeked service for repair of this recall by experts. This safety issue is still ongoing and urgency is needed for this to be resolved.
The contact owns a 2009 Mercedes-Benz C300. The contact stated that she had experienced several electrical failures with the vehicle including the power seat and power windows, the parking brake, the exterior lighting, and the air bag warning lights. The contact also stated that the vehicle would lose motive power and stall while driving at various speeds with several unknown warning lights illuminated. The dealer was notified of the failure but offered no assistance. Upon investigation, the contact linked that failure to the federal safety agency Campaign Number: 22V168000 (Exterior Lighting, Electronic Stability Control, Engine and Engine Cooling). The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 120,000.
Front Right SRS Malfunction Service Required
My rear subframe is dropped my airbag lights keep coming on my suspension is terrible because of my suspension my rear subframe had dropped and my light warning for my lights keep coming on
Bank in 2017 the SRS airbag safety light comes on and needs replacement. This was a recall. I waited until late 2018 when the air bags came into the mercedes dealer in annapolis to replace for recall. After that the SRS airbag safety light still comes on. We take it back to mercedes for them to check and clear. They say it was done. Same light comes back on. We take it back to mercedes today 2/25/2020 and they say its a safety faulty seat belt switch. They want to charge me $1100 to repair. I told them they should have fixed everything properly and I still believe that they just never reset or cleared the SRS airbag alert light so that we would have to pay some bogus made up repair. I believe that we are being treated unfairly and that this dealer is being dishonest. The SRS airbag light was not reset and it is still on. Help?
I have a mb c300 2008 the car never had an issue until I brought it in for a airbag recall 2 weeks later I get an SRS malfunction, esp and ABS failure car doesnt turn on next day the car turns on and engine light goes on, then lights stayed on even after car was off next day lights went off while driving in dark making for hazardous and quite scary situation mb is doing these recalls but jeopardizing the overall integrity of car I even replaced battery but this still occurred car was rendered undrivable and stuck in my driveway and had to have it towed and pay $380 just to look at it even though I told them they caused damage there is no way a perfectly running car coincidentally has major electrical issues post recall (they replaced entire stash board and steering wheel cover)
Related recalls
Air bags: frontal: passenger side: inflator module
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2013 C250, C250 Coupe, C350 Coupe 4Matic, C300 4Matic, C350, C350 Coupe, C63 AMG, C63 Coupe, E350 Cabrio, E350 Coupe, E550 Cabrio, E350 Coupe 4Matic, E550 Coupe, GLK350 4Matic, GLK250 Bluetec 4Matic, GLK350, SLS Coupe, SLS AMG GT Coupe, and SLS Roadster vehicles sold, or ever registered, in the states of Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands or "Zone A." Additionally, MBUSA is recalling certain 2010 C300, C300 4Matic, C63 AMG, E350 Coupe, E550 Coupe, GLK350, and GLK350 4Matic vehicles ever registered in the states of Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia or "Zone B." MBUSA is also recalling certain 2009 C300, C300 4Matic, C63 AMG, and C350 vehicles ever registered in the states of AK, CO, CT, ID, IA, ME, MA, MI, MN, MO, NH, NY, ND, OR, RI, SD, UT, VT, WA, WI and WY or "Zone C." In the event of a crash necessitating deployment of the passenger frontal air bag, these passenger air bag inflator may explode due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
- Risk
- An inflator explosion may result in sharp metal fragments striking the driver or other occupants resulting in serious injury or death.
- Remedy
- MBUSA will notify owners, and dealers will replace the passenger frontal air bag module, free of charge. Mercedes issued an interim notification to owners on February 23, 2018. A second notice will be mailed when remedy parts are available. Owners may contact MBUSA customer service at 1‑877‑496‑3691.
Recall number 18V043000 · Recall details
Air bags: frontal: passenger side: inflator module
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2012 C300 4Matic, C250, C250 Coupe, C350, C350 Coupe 4Matic, C350 Coupe, C63 AMG, C63 AMG Coupe, E350 Coupe 4Matic, E350 Cabrio, E350 Coupe, E550 Cabrio, E550 Coupe, GLK350 4Matic, GLK350, SLS AMG Cabrio, and SLS AMG Coupe vehicles originally sold, or ever registered, in Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands, or "Zone A." Additionally, unless included in "Zone A" above MBUSA is recalling certain 2009 C300 4Matic, C300, C350 and C63 AMG vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia, or "Zone B." Additionally, unless included in "Zone A" or "Zone B" above MBUSA is recalling certain 2008 C300 4Matic, C300, and C350 vehicles originally sold, or ever registered, in Alaska, Colorado, Connecticut, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, New Hampshire, New York, North Dakota, Oregon, Rhode Island, South Dakota, Utah, Vermont, Washington, Wisconsin, and Wyoming. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules, and used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
- Risk
- An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.
- Remedy
- MBUSA will notify owners, and dealers will replace the front passenger air bag modules, free of charge. Owners were sent an interim notification in March 2017. Second notices started going out in October 2018 and continue to be mailed as parts become available. Owners may contact MBUSA customer service at 1‑877‑496‑3691
Recall number 17V017000 · Recall details
Air bags: frontal: passenger side: inflator module
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain model year 2008-2011 C300 Sedan, C300 4matic Sedan, C350 Sedan, C63 AMG Sedan vehicles, 2010-2011 GLK350, GLK350 4-Matic and E350 Coupe vehicles, 2011 SLS AMG, E350 Convertible, E550 Coupe and E550 Convertible vehicles originally sold, or ever registered, in Alabama, California, Florida, Georgia, Hawaii, Louisiana, Mississippi, South Carolina, Texas, Puerto Rico, American Samoa, Guam, the Northern Mariana Islands (Saipan), and the U.S. Virgin Islands, or "Zone A." Additionally, unless included in "Zone A" above, MBUSA is recalling certain model year 2008 C300 Sedan, C350 Sedan, C63 AMG Sedan and C300 4-Matic Sedan vehicles originally sold, or ever registered, in Arizona, Arkansas, Delaware, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Maryland, Missouri, Nebraska, Nevada, New Jersey, New Mexico, North Carolina, Ohio, Oklahoma, Pennsylvania, Tennessee, Virginia, and West Virginia, or "Zone B." Vehicles not originally sold or ever registered in either Zones A or B are not subject to this safety recall. These vehicles are equipped with certain air bag inflators assembled as part of the passenger frontal air bag modules, and used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture due to propellant degradation occurring after long-term exposure to absolute humidity and temperature cycling.
- Risk
- An inflator rupture may result in metal fragments striking the vehicle occupants resulting in serious injury or death.
- Remedy
- MBUSA will notify owners, and dealers will replace the passenger frontal air bag modules, free of charge. Owners were sent an interim notification October 2016. A second notice will be mailed when remedy parts are available. Owners may contact MBUSA customer service at 1‑877‑496‑3691.
Recall number 16V363000 · Recall details
Air bags: frontal: driver side: inflator module
- What is wrong
- Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2009-2010 ML320 BlueTec 4Matic, GL320 BlueTec 4Matic and R320 CDI 4Matic, 2011 E350 Cabriolet and E550 Cabriolet, 2009-2011 ML350, ML350 4Matic, ML550 4Matic, ML63 AMG, and C63 AMG, 2010-2011 ML450 4Matic Hybrid, E350 Coupe, E350 4Matic, E550 Coupe, E550 4Matic, and E63 AMG, 2011-2012 GL350 BlueTec 4Matic and R350 BlueTec 4Matic, 2009-2012 GL450 4Matic, GL550 4Matic and R350 4Matic, 2007-2008 SLK280, SLK350, and SLK55 AMG, 2011-2014 SLS AMG Coupe, 2012 SLS AMG Cabriolet, 2013-2014 SLS AMG GT and SLS AMG GT Cabriolet, 2005 C230 Kompressor and C320, 2006-2007 C230, 2006-2011 C350, 2008-2011 C300 and C300 4Matic, 2010-2012 GLK350 and GLK350 4Matic and 2007-2008 Chrysler Crossfire vehicles. Upon deployment of the driver's frontal air bag, excessive internal pressure may cause the inflator to rupture.
- Risk
- In the event of a crash necessitating deployment of the driver's frontal air bag, the inflator could rupture with metal fragments striking the driver or other occupants resulting in serious injury or death.
- Remedy
- MBUSA will their notify owners, and Fiat Chrysler will notify the affected Chrysler owners. Dealers for the respective brands will replace the driver's frontal air bag module, free of charge. This recall began November 2016. Mercedes-Benz owners may contact MBUSA customer service at 1‑800‑367‑6372 and Chrysler owners may contact Fiat Chrysler customer service at 1‑800‑853‑1403.
Recall number 16V081000 · Recall details
Air bags: frontal: sensor/control module-inactive
- What is wrong
- Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2008-2009 C300 Sedan, C300 4Matic, C63 AMG, and C350 vehicles, and 2010 GLK350 and GLK350 4Matic vehicles. Due to a manufacturing error, the air bag control unit may corrode and cause the control unit to malfunction.
- Risk
- The malfunctioning air bag control unit may cause the air bags to unexpectedly deploy increasing the risk of injury and the possibility of a vehicle crash. Alternatively, the air bag control unit malfunction may cause the air bags to not deploy in the event of a crash necessitating air bag deployment, increasing the risk of occupant injury.
- Remedy
- MBUSA will notify owners, and dealers will inspect the air bag control unit and replace it, as necessary, free of charge. Mercedes-Benz issued an interim notification to owners on December 23, 2015. The recall began on March 14, 2016. Owners may contact MBUSA customer service at 1‑800‑367‑6372.
Recall number 15V711000 · Recall details
Questions about the Mercedes Benz C300 airbag light
Why does the airbag light come on in the Mercedes Benz C300?
Owners who report it most often also describe seat belt won't latch or retract, headlights failing or too dim and check engine light.
Which Mercedes Benz C300 years have airbag warning light problems?
The model years with the most reports are 2008 (54 complaints) and 2009 (31 complaints).
How much does it cost to fix airbag warning light on the Mercedes Benz C300?
Owners who mentioned a price put the repair at about $1,000 (median of 11 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
VIN decoder
See the problems and recalls for an exact car
Buying a used Mercedes Benz C300?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history