repaired · 2026 Q1
Electrical system: wiring
Risk. An overheated ground connection can increase the risk of a fire.
2019 Mercedes-Benz GLS450Problems, recalls & complaints
NHTSA has logged 26 owner complaints about the 2019 Mercedes-Benz GLS450, most often about the electrical system. It is covered by 3 safety recalls, and for recall 24V-207 the manufacturer reports only 84% of affected cars repaired.
Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through October 31, 2026. Updated daily.
Complaints by system
Where the 2019 Mercedes-Benz GLS450 has problems
26 complaints grouped by the system owners reported.
5Electrical system
3Power train
3Engine
3Engine and engine cooling1 crash/fire/injury
2Air bags1 crash/fire/injury
2Back over prevention
2Service brakes
2Structure
2Suspension
44 other systems1 crash/fire/injury
| System | Complaints | Crash, fire or injury |
|---|---|---|
| Electrical system | 5 | 0 |
| Power train | 3 | 0 |
| Engine | 3 | 0 |
| Engine and engine cooling | 3 | 1 |
| Air bags | 2 | 1 |
| Back over prevention | 2 | 0 |
| Service brakes | 2 | 0 |
| Structure | 2 | 0 |
| Suspension | 2 | 0 |
| 4 other systems | 4 | 1 |
Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.
3 recalls
2019 Mercedes-Benz GLS450 recalls and how many were fixed
Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.
repaired · 2026 Q2
Communication: auto crash notification
Risk. A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency…
repaired · 2023 Q4
Communication: auto crash notification
Risk. Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Mercedes-Benz.
Best & worst years
2019 vs. every other GLS450 year
Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the GLS450 median. How we score
'16'17'18'19'20'21
- Avoid
- Caution
- Solid
- Best
- Not rated
In owners' words
What GLS450 owners report
Recent electrical system complaints filed with NHTSA, shortened. Personal details are removed.
A silica bag has burst inside the coolant system, contaminating the entire engine and disabling all heating and defrosting capabilities at only 40,000 miles. Estimates for the fix over $13,000.
The AC/Heating control unit failed prematurely at 40,000 miles, causing a complete loss of cabin heat and windshield defrosting capabilities. This creates a severe visibility and driving hazard in freezing weather, and risks the safety of a dependent child with high medical vulnerabilities.
At first, the parking brake assist would appear when vehicle was put into park or when starting. We would have to release the parking brake each time. Then, the parking brake assist light would not go on, but the parking brake assist would engage and or be sticking while driving causing a burning…
Own a 2019 GLS450?
Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.