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 SL55 has 4 recalls, the most serious involving an unsecured wiring harness for the starter and alternator that can short circuit, cutting drive power or overheating the harness to the point of fire.
Two separate recalls cover the fuel pump, which can shut down without warning and cut engine power while driving. Prior repair attempts did not fully resolve the issue, which is why it appears across more than one filing. A sudden loss of power at highway speed leaves the driver with reduced ability to accelerate out of a hazard and may cause an unexpected deceleration that surprises following traffic. The fourth recall involves 80-amp fuses that were manufactured incorrectly and can fail, also cutting drive power or knocking out critical systems including the airbags and seatbelt pretensioners, or blanking the instrument cluster so the driver loses visibility into speed, fuel, and warning indicators.
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.