2006-2012 Mercedes-Benz ML/GL/R Recall 24V298: Brake Booster

Recall 24V298 covers 15,604 2006-2012 Mercedes-Benz ML, GL, and R-Class vehicles for brake booster corrosion. Do not drive. Free repair at any franchised Mercedes-Benz dealer.

What's wrong?

The brake booster in affected 2006-2012 Mercedes-Benz vehicles helps multiply the force from your foot on the brake pedal. It uses vacuum assist, which means engine vacuum helps push hydraulic pressure through the brake system so the vehicle slows with normal pedal effort. Without that assist, the brakes require more effort from the driver.

On these vehicles, a rubber sleeve around the brake booster housing can trap moisture against the metal housing. That sleeve was installed for appearance, not for brake function. Moisture can work under the sleeve and corrode the joint area of the booster housing. As corrosion advances, the booster can lose assist, which reduces brake performance or leads to brake failure.

The warning signs are a change in brake pedal feel, hissing, or airflow noises when you press the brake pedal. Treat those symptoms as brake system warnings and have the vehicle checked before driving farther.

Who's affected?

Covers ML, GL, and R-Class models from 2006-2012, all tied to the same brake booster part in the hydraulic brake system.

The year and model narrow the scope, but the VIN decides. Check your VIN to confirm whether your specific vehicle is included.

What's the safety risk?

Reduced brake performance or brake failure can increase the risk of a crash. Do not drive the vehicle, even for short trips, until the brake booster remedy is complete. A change in brake pedal feel or hissing and airflow noises while braking are warning signs to stop and arrange towing. Repair is free at any franchised Mercedes-Benz dealer.

What should I do?

1. Check your VIN to confirm your 2006-2012 Mercedes-Benz ML550, R320, AMG ML63, ML320, ML350, ML450, GL320, GL350, GL450, GL550, R500, AMG R63, ML500, or R350 is included in this recall.
2. Do not drive the vehicle until the brake-booster inspection and repair are complete.
3. Arrange a tow if the vehicle has to be moved to the dealer; do not drive it there yourself.
4. Contact a franchised Mercedes-Benz dealer to schedule the free brake-booster inspection and repair that addresses reduced brake performance or brake failure.
5. Bring the recall notice if Mercedes-Benz mailed one. If not, reference recall number 24V298 when you call.

What happens at the repair

At the dealer, a Mercedes-Benz technician removes the rubber sleeve, inspects the brake booster housing, and replaces the brake booster if corrosion or damage requires it. The recall repair is free, including parts and labor. Do not drive the vehicle until this remedy is complete. Ask the dealer about towing instead of driving it in. Mercedes-Benz's standard reimbursement plan covers qualifying repairs paid before the recall notice tied to this condition. Keep prior brake-booster repair paperwork and ask Mercedes-Benz customer service or the service desk how to submit it.

Timeline

Frequently asked questions

More information

Source documents

• Download Quarterly Report (PDF) · RCLQRT
• Download Recall Investigation Document (PDF) (PDF) · RCRIT
• Download Owner Notification Letter (PDF) · RCONL
• Download Owner Notice (PDF) · RCMN
• Download Recall Report (PDF) · RCLRPT
• Download Recall Acknowledgement (PDF) · RCAK
• Download Misc. Document (PDF) · RMISC

This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →