| Issue ID | 1637335 |
| Internal NHTSA # | 11300899 |
| Manufacurer | Mercedes-Benz USA, LLC. |
| Brand | MERCEDES-BENZ |
| Model | GLS450 |
| Model Year | 2019 |
| File date | 20/01/20 |
| Component | SERVICE BRAKES |
| Product type code | VEHICLE |
| Description of the problem | Mercedes benz has grossly mis-represented the active brake system feature. The owners manual leaves out a key element, which is that the drivers foot needs to be off the pedal for the feature to activate. I. E. The feature will only work when the driver is not pressing the accelerator. This is a critical feature and one they shouldn't omit. I expect the the auto brake to come into effect when i'm approaching a car in front of me at a a pace that will lead to a collision. But it doesn't work that way. Following is what the owners manual says (note that it doesn't say anything about the foot off the acceleration). "active brake assist can help you to minimize the risk of a collision with the vehicle traveling in front or reduce the effects of such a collision. If active brake assist detects that there is a risk of collision, you will be warned visually and acoustically. If you do not react to the visual and audible collision warning, autonomous braking can be initiated in critical situations. If you apply the brake yourself in a critical situation, adaptive brake assist supports you with situation dependent braking assistance" |
| Vehicle Mileage at Failure | |
| Number of Occurences | |
| Source of the issue | NHTSA WEB SITE |
| City and State | PASADENA, CA |
| VIN pattern | 4JGDF6EE2KBXXXXXX |
| Was vehicle invloved in a crash? | N |
| Was vehicle involved in a fire? | N |
| Was incedent reported to police? | N |
| Was medical attention required? | N |
| Was part original equipment? | |
| No. of injured persons | |
| No. of fatalities | |
| Date of purchase | 07/08/26 |
| Was original owner? | N |
| Anti-lock brakes | N |
| Cruise control | N |
| Number of cylinders | |
| Drive train type | |
| Transmission type | |
| Vehicle speed | |
| DoT tire identifier | |
| Tire size | |
| Location of tire code | |
| Type of tire failure code | |
| Was defective tire repaired? | |
| Date of manufacture | |
| Type of child seat code | |
| Type of restraint | |
| Dealer's name | |
| Dealer's telephone number | |
| Dealer's city | |
| Dealer's state code | |
| Dealer's ZIP code |