Recall 20V776 affects 2,563 2018-2020 Mercedes-Benz AMG GLC63 vehicles for a starter power cable short. Repair is free at any franchised Mercedes-Benz dealer.
Mercedes-Benz is recalling 2,563 2018-2020 AMG GLC63 vehicles because an incorrectly installed starter power supply cable can chafe against the starter housing. If the cable short-circuits, the vehicle can stall or face a fire risk, and Mercedes-Benz dealers will inspect and repair the cable free of charge.
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What's wrong?
The starter motor on the 2018-2020 Mercedes-Benz AMG GLC63 uses battery power to crank the engine when you start the vehicle. A heavy positive power cable feeds that starter, and the cable has to stay correctly fastened and routed so it does not touch nearby metal parts.
In the recalled vehicles, Mercedes-Benz found that the screw connection for the positive starter cable was not installed to specification. That can leave the cable close enough to rub against the starter housing. Over time, the housing can wear through the cable insulation, creating a short circuit that drains the battery, prevents starting, or sends smoke from the engine compartment.
There is no warning sign before failure. The vehicle can be parked and then fail to start, or it can shut off through the start/stop system and not restart.
Who's affected?
The same exchange starter motor part, A2789060700, appears across all included model years.
| 2018 Mercedes-Benz AMG GLC63 | electrical system |
|---|---|
| 2019 Mercedes-Benz AMG GLC63 | electrical system |
| 2020 Mercedes-Benz AMG GLC63 | electrical system |
| Units affected | 2,563 |
| Field incidents | NHTSA has logged 4 field incidents to date. |
The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific SUV is included.
What's the safety risk?
A short circuit in the power supply cable can cause a stall, increasing crash risk. The same short circuit can also raise fire risk. There is no advance warning before this failure, so schedule the recall inspection and repair soon. Repair is free at any franchised Mercedes-Benz dealer.
What should I do?
- Check your VIN to confirm your 2018-2020 Mercedes-Benz AMG GLC63 is included in this recall.
- Contact a franchised Mercedes-Benz dealer to schedule the free starter-harness and power-supply-cable inspection, which checks for cable chafing that can lead to a short-circuit, stall, or fire.
- Bring the recall notice if Mercedes-Benz sent one, and reference recall number 20V776 when you call.
- Drive cautiously until the repair is complete, and stop in a safe place if the vehicle stalls or you smell smoke.
What happens at the repair
At the dealer, a Mercedes-Benz technician inspects the starter harness and power supply cable installation, then corrects the cable routing or installation as needed. The recall repair is free, with parts and labor covered. Out of pocket repairs already paid are handled through the new vehicle warranty, not through a separate reimbursement program, because the involved vehicles remain under warranty. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| December 11, 2020 | NHTSA published the recall |
|---|---|
| December 18, 2020 | Dealer notification began |
| December 18, 2020 | Dealer notification ended |
| February 9, 2021 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| February 9, 2021 | Interim owner notification (was planned for this date) |
| March 18, 2021 | Owner notification mailed |
Frequently asked questions
What is recall 20V776?
Recall 20V776 covers 2,563 2018-2020 Mercedes-Benz AMG GLC63 vehicles with a starter power supply cable that was installed incorrectly. The cable can chafe against the starter housing and short-circuit. Mercedes-Benz dealers inspect the starter harness and cable installation, then correct it for free.
What should I do if my 2018-2020 Mercedes-Benz AMG GLC63 is on this recall?
Check your VIN to confirm your specific AMG GLC63 is included in recall 20V776. If it is, contact a franchised Mercedes-Benz dealer to schedule the starter harness and power supply cable inspection. Reference recall number 20V776 or Mercedes-Benz recall number 2021010006 when you call.
Is the recall repair free?
Yes. Federal recall law requires the recall repair at no cost, and Mercedes-Benz says dealers will inspect the starter harness and power supply cable installation, then correct it as necessary, free of charge. The recall repair has been available since March 18, 2021.
What is the safety risk?
The safety risk is a short-circuit in the starter power supply cable. If the cable shorts, the vehicle can stall, which raises crash risk. A short-circuit also increases fire risk. Schedule the free dealer inspection and correction if your VIN is included.
What if I bought my Mercedes-Benz AMG GLC63 used?
The free recall repair still applies. Federal recall law requires manufacturers to honor open safety recalls regardless of ownership history. Check your VIN to see whether your specific 2018-2020 AMG GLC63 is included, then call a franchised Mercedes-Benz dealer with recall number 20V776.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/20V776000 |
|---|---|
| Mercedes-Benz customer service | 1-800-367-6372 |
| NHTSA recall # | 20V776 |
| NHTSA recall # (full) | 20V776000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Recall Document (PDF) (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 23, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →