NHTSA (USA)Critical
At a glance
What can fail
The 80-Amp fuses in the main fuse box may have been manufactured incorrectly, causing them to fail.
What the fix does
Dealers will replace the main fuse boxes at no cost to you.
The 2023 Mercedes-Benz AMG SL63 has 4 recalls, with the most serious being an unsecured wiring harness for the starter and alternator that can short-circuit, cutting drive power without warning or overheating to the point of starting a fire.
The fuel pump across multiple recalls can shut down unexpectedly, stalling the engine and leaving the driver without power to accelerate or maintain speed in traffic. Because two separate recall filings cover this fuel pump shutdown issue across overlapping model year ranges, prior repair attempts may not have fully resolved the problem for all affected vehicles. On the electrical side, certain 80-amp fuses were produced incorrectly and can fail in service, which may cause a sudden loss of drive power or knock out critical systems including the airbags and instrument cluster, removing both crash protection and the driver's view of speed, warnings, and fuel level.
At a glance
What can fail
The 80-Amp fuses in the main fuse box may have been manufactured incorrectly, causing them to fail.
What the fix does
Dealers will replace the main fuse boxes at no cost to you.
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Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The fuel pump may unexpectedly shut down, causing the engine to lose power while driving.
What the fix does
The fuel pump will be replaced at no cost to you at an authorized Mercedes-Benz dealer.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The electrical wiring harness connecting the starter and alternator may not be properly secured, potentially causing a short circuit that cuts off power or causes the harness to overheat.
What the fix does
Dealers will secure the electrical wiring harness for the starter and alternator at no cost to you.
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.