Service Bulletin

2021 Mercedes-Benz AMG GT 48V Electrical System Fault

A manufacturer communication addresses a 'Functional impairment of 48 V on-board electrical system' in the 2021 Mercedes-Benz AMG GT, potentially leading to various electrical issues.

ByAhmet Topcu — Founder & Editor-in-ChiefAutomated summary2021 Mercedes-Benz AMG GT
2021 Mercedes-Benz AMG GT — Mercedes-Benz AMG GT 48V electrical system
Editorial illustration generated for this article.
Mercedes-Benz AMG GT 48V electrical systemFunctional impairment of 48 V on-board electrical system2021 Mercedes-Benz AMG GT electrical system faultAMG GT 48V electrical system problemMercedes-Benz AMG GT power lossNHTSA ID 10206063Mercedes-Benz TSB electrical systemAMG GT 48V battery issueMercedes-Benz AMG GT electrical system warning48V on-board electrical system malfunction

Owners of the 2021 Mercedes-Benz AMG GT may experience issues related to the vehicle's 48-volt on-board electrical system. A manufacturer communication from Mercedes-Benz highlights a potential 'Functional impairment of 48 V on-board electrical system' that could affect vehicle operation.

Symptoms

If your 2021 Mercedes-Benz AMG GT is affected by a 'Functional impairment of 48 V on-board electrical system', you might notice several symptoms. These can include:

  • Warning messages or indicator lights appearing on the dashboard related to the electrical system or battery.
  • Reduced performance or intermittent power delivery.
  • Malfunctions of electrical components that rely on the 48V system.
  • Difficulty starting the vehicle or complete loss of electrical power.

Any of these signs could point to a problem with the Mercedes-Benz AMG GT 48V electrical system.

Diagnosis

Given the complexity of modern vehicle electrical systems, diagnosing a 'Functional impairment of 48 V on-board electrical system' requires specialized tools and expertise. A Mercedes-Benz dealership will use diagnostic equipment to pinpoint the exact cause of the electrical system malfunction.

Technicians will likely check for fault codes stored in the vehicle's control modules and perform tests on the 48V battery, converter, and associated components to identify the source of the issue. This ensures an accurate assessment of the Mercedes-Benz AMG GT 48V electrical system.

Repair Procedure Summary

While the specific repair steps are not detailed in the public summary of this communication, addressing a 'Functional impairment of 48 V on-board electrical system' typically involves inspecting and, if necessary, repairing or replacing components within the 48-volt electrical system. This could include the 48V battery, voltage converter, or related wiring and control units.

The repair will be performed by trained Mercedes-Benz technicians to restore the full functionality of your vehicle's electrical system.

Owner Action

If you own a 2021 Mercedes-Benz AMG GT and suspect an issue with your 48-volt electrical system, or if you observe any of the symptoms mentioned, it is recommended to contact your authorized Mercedes-Benz dealership. They can perform the necessary diagnostic checks and repairs.

It is always advisable to address electrical system warnings promptly to prevent potential further damage or safety concerns. Ensure you mention any specific warning messages you've seen to the service advisor.

Source: NHTSA ID 10206063

Frequently Asked Questions

What does 'Functional impairment of 48 V on-board electrical system' mean?
This phrase, highlighted in a Mercedes-Benz manufacturer communication, refers to a problem with the 48-volt electrical system in your vehicle. This system powers various components and a fault can lead to electrical issues, warning lights, or reduced vehicle functionality.
What are the common symptoms of a 48V electrical system fault in a 2021 Mercedes-Benz AMG GT?
Symptoms can include dashboard warning lights, messages indicating an electrical system malfunction, reduced power, or issues with electrically-powered features. In severe cases, you might experience difficulty starting the vehicle or a complete loss of electrical power.
What should I do if my 2021 Mercedes-Benz AMG GT shows signs of a 48V electrical system problem?
If you notice any symptoms of a 'Functional impairment of 48 V on-board electrical system', you should contact your authorized Mercedes-Benz dealership as soon as possible. They have the specialized diagnostic tools and trained technicians to properly identify and resolve the issue.

What Mercedes-Benz AMG GT owners report

Counted from the records in our database across 11 model years.

36
Owner complaints
39
Recalls
426
Service bulletins
0
Crashes reported
1
Fires reported
0
Injuries reported

The 2021 model year

3 complaints, the 5th most of 11 model years on file. Owners reported 0 crashes, 0 fires and 0 injuries for this year, which also has 12 recalls on file.

Electrical System, the system this article covers, accounts for 8 of 36 complaints (22%), including 2 for 2021.

Complaints by model year

Model years with the most complaints for the Mercedes-Benz AMG GT
201610
20182
20196
20205
20213
20222
20233
20241
20251
20262

Most-reported systems

  1. Electrical System — 8
  2. Power Train — 8
  3. Engine — 4
  4. Service Brakes — 4
  5. Wheels — 4

Latest recalls for the 2021 model year

  • 24V445000 — Electrical System (Jun 2024)
  • 24V100000 — Electrical System (Feb 2024)
  • 23V880000 — Fuel System, Gasoline (Dec 2023)
All 2021 recalls →

Recent owner reports about electrical system

The contact owns a 2021 Mercedes-Benz AMG GT53. The contact received notification of NHTSA Campaign Number: 24V445000 (ELECTRICAL SYSTEM); however, the part to do the recall repair was not yet available. The local dealer was contacted.

2021 Mercedes-Benz AMG GT owner, Dec 2024
Read owner complaints →

Complaints are owner reports filed with NHTSA. They are unverified, and counts depend on how many vehicles were sold, so they are not a failure rate.

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