Recall 18V840 covers 7 2019 Mercedes-Benz Glc 300 vehicles for loss of power steering assist. Repair is free at any franchised Mercedes-Benz dealer.
Mercedes-Benz is recalling 7 2019 Glc 300 vehicles because an internal sensor in the electric power steering unit can fail and shut off power steering assist. Loss of power steering assist makes the vehicle harder to steer and increases crash risk; Mercedes-Benz dealers will complete the repair free of charge.
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What's wrong?
The electric power steering unit on the 2019 Mercedes-Benz Glc 300 helps reduce the effort needed to turn the steering wheel. Inside that unit, an internal magnetic sensor helps the system confirm steering position and keep power assist working as designed. The steering still depends on the unit reading that sensor correctly.
On affected vehicles, a supplier production deviation left a batch of power steering units with magnetic sensors that do not meet specification. If that sensor fails, the electric assist shuts off, so the driver loses the powered help normally used to turn the wheel. That makes the steering feel heavier than expected.
The warning sign is a message in the instrument cluster saying the power steering support has been deactivated. Treat that message as the signal that the steering assist is no longer working normally.
Who's affected?
| 2019 Mercedes-Benz Glc 300 | power steering system |
|---|---|
| Units affected | 7 |
Not every 2019 Mercedes-Benz Glc 300 is on the list. Check your VIN to confirm whether your specific SUV is included.
What's the safety risk?
Loss of electric power steering assist makes the 2019 Mercedes-Benz Glc 300 harder to steer and increases the risk of a crash. A warning message in the instrument cluster tells you when power steering support has been deactivated. If that message appears, drive cautiously, reduce speed, and schedule service. Repair is free at any franchised Mercedes-Benz dealer.
What should I do?
- Check your VIN to confirm your 2019 Mercedes-Benz Glc 300 is included in this recall.
- Contact your nearest franchised Mercedes-Benz dealer to schedule the free steering-unit replacement that fixes the internal sensor fault that deactivates power steering assist.
- Bring the recall notice if Mercedes-Benz mailed one. If not, reference recall number 18V840 when you call.
- Drive cautiously until the repair, especially at low speeds where steering effort rises without power assist.
What happens at the repair
At the dealer, a Mercedes-Benz technician replaces the electric power steering unit covered by the recall. Parts and labor are free. This repair addresses the internal sensor failure that can shut off power steering assist. Out-of-pocket repairs already paid are handled through the new vehicle warranty, not through a separate reimbursement program, because all involved vehicles remain under warranty. Ask the service desk how warranty coverage applies if you have prior repair paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| November 27, 2018 | NHTSA published the recall |
|---|---|
| December 14, 2018 | Dealer notification began |
| January 25, 2019 | Interim owner notification (was planned for this date) |
| March 31, 2019 | Dealer notification ended |
| June 7, 2019 | Owner notification mailed |
Frequently asked questions
What is recall 18V840?
Recall 18V840 covers 7 2019 Mercedes-Benz Glc 300 vehicles with an internal sensor fault inside the electric power steering unit. If the sensor fails, power steering assist deactivates, which increases crash risk. Mercedes-Benz dealers will replace the steering unit for free.
What should I do if my 2019 Mercedes-Benz Glc 300 is on this recall?
Check your VIN to confirm your specific Glc 300 is included in recall 18V840. If it is, contact a franchised Mercedes-Benz dealer to schedule steering unit replacement. Reference recall number 18V840 and Mercedes-Benz recall number 2019040007 when you call.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and Mercedes-Benz dealers will replace the steering unit free of charge. The recall repair applies even if you bought the vehicle used.
What is the safety risk?
The safety risk is loss of electric power steering assist. If the assist deactivates, steering requires more effort, especially at low speeds or during tight maneuvers. That loss of assist increases crash risk, so confirm your VIN and schedule the free dealer repair if included.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/18V840000 |
|---|---|
| Mercedes-Benz customer service | 1-800-367-6372 |
| NHTSA recall # | 18V840 |
| NHTSA recall # (full) | 18V840000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Quarterly Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 25, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →