NHTSA (USA)Medium Risk
At a glance
What can fail
Headlights may be aimed too high, creating glare for drivers in oncoming vehicles.
What the fix does
The 2021 Mercedes-Benz GLC 300 has 9 recalls, the most serious being a fuel pump that can shut down without warning, cutting drive power and raising the risk of a crash.
On the occupant safety side, two recalls affect restraint systems: seatbelt pretensioners may not perform correctly in a crash, and side impact sensor connectors can come loose, potentially delaying airbag and seatbelt deployment during a side collision. Both issues raise the risk of injury. The backup camera system can also fail, with the MBUX multimedia software causing the display to go black or reboot on startup, leaving the driver without a rear view while reversing.
Headlights appear in two recalls: the electrical connection behind the headlight housing may allow moisture in and cause the light to fail entirely, while a separate issue involves headlights aimed too high, creating glare for oncoming drivers. Three recalls cover the automatic emergency call system, where different software or hardware faults can either disable the system entirely, send responders to the wrong location, or prevent the vehicle from reaching the emergency call center after a crash.
At a glance
What can fail
Headlights may be aimed too high, creating glare for drivers in oncoming vehicles.
What the fix does
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Dealer will inspect and adjust headlight aim as needed at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The fuel pump may shut down unexpectedly, causing a loss of engine power while driving.
What the fix does
Dealers will replace the fuel pump at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A software error in the communication module's SIM card can prevent mobile network connection, which disables the emergency call (eCall) system.
What the fix does
The communication module software will be updated at no cost through an over-the-air update or by a dealer.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The electrical connection for the headlights may not be watertight, allowing water to enter and cause headlight failure.
What the fix does
Dealers will inspect and replace the headlight sealing plugs as necessary at no charge.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The side crash sensor connectors may loosen, potentially delaying airbag and seatbelt activation during a side impact crash.
What the fix does
Dealers will inspect and replace the side impact crash sensors as needed, at no charge.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The MBUX multimedia system software may cause the display to go black or restart after startup, preventing the rearview camera image from displaying properly.
What the fix does
A dealer will update the multimedia system software, or you can receive the update over-the-air, at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
A faulty electrical contact in the seat position switch may prevent driver and passenger air bags and seat belt force limiters from activating during a crash.
What the fix does
Dealers will replace the seat position switches at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The communication module may have been turned off during service, disabling the Emergency Call function that connects your vehicle to emergency services.
What the fix does
Dealers will inspect the communication module and reactivate it if needed, at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The communication module software may fail to send your vehicle's correct location to emergency services when the eCall system activates during a crash.
What the fix does
A dealer will update the communication module software, or the update will be sent over-the-air, at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.