NHTSA (USA)Medium Risk
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.
The 2020 Mercedes-Benz AMG GLC63 has 10 recalls, the most serious involving two separate fire and stall risks: a damaged power steering wiring harness that can short-circuit or cause sudden loss of steering assist, and a starter power cable that can chafe against its housing, short-circuit, and stall the engine.
On the occupant safety side, loose side crash sensor connectors can delay airbag and seatbelt activation in a side impact, and the left-rear seatback latch may not hold under load in a crash, allowing the seatback to swing forward into occupants. The electronic stability control software can react inaccurately to driving conditions, reducing the system's ability to help prevent a skid or loss of control.
Three recalls cover the automatic crash notification system: taken together, the eCall system may fail to connect to emergency services, transmit no location at all, or send rescuers to the wrong location after a crash. The remaining two recalls affect rear visibility, as a software fault in the infotainment system can cause the backup camera display to go black or reboot, leaving the driver without a rear view while reversing.
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.
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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
A software error prevents the rearview camera from displaying the backup image on the screen.
What the fix does
Dealers will update the rearview camera software at no cost to restore the backup image display.
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
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.
At a glance
What can fail
The power supply cable on the starter may not be installed correctly, allowing it to chafe against the starter housing and cause an electrical short.
What the fix does
Dealers will inspect the starter harness and power supply cable installation and correct any issues at no charge.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The power steering control unit wiring harness may have been damaged during manufacturing, potentially causing loss of power steering assist or an electrical short-circuit.
What the fix does
Dealers will inspect the wiring harness and replace it if necessary at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The Electronic Stability Program (ESP) software may be incorrect, causing the ESP system to respond inaccurately.
What the fix does
Dealers will update the ESP software at no charge to restore proper system function.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The left-rear seatback latch may be too weak to hold under load. If cargo strikes the seatback, the latch could fail and the seat could unlatch.
What the fix does
Dealers will replace the left-rear seatback latch at no cost to you.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
An electrical circuit in the Emergency Call System communication module may be damaged, causing the system to send an inaccurate vehicle location during an emergency call.
What the fix does
Dealers will replace the communication module at no cost to restore accurate location transmission.
Summarized — see the official notice for exact wording, dates, and contacts.