NHTSA Recall 04V220000: Check valve (service brakes)
FREIGHTLINER LLC reported this safety recall to NHTSA on , covering an estimated 1,700 vehicles. It affects 2004 Freightliner Business Class M2.
| NHTSA campaign | 04V220000 |
|---|---|
| Manufacturer campaign | FL-423 |
| Component | SERVICE BRAKES, AIR › SUPPLY › CHECK VALVE |
| Report received | May 6, 2004 |
| Owner notification | June 29, 2004 |
| Initiated by | Manufacturer |
Defect
On certain trucks, incorrect springs were installed in the exhaust port of certain air management unit (amu) solenoid valves and they may not turn off after actuation.
Safety risk
Depending on the function affected, this could result in rear suspension air pressure loss, malfunction of the engine brake, permanent engagement of the rear axle differential lock, or prevent engagement of the fifth wheel slide lock. If the warning indicators in the dash are not heeded, a crash could occur.
Remedy
Dealers will replace the affected valves. The recall began june 29, 2004. Owners should contact freightliner at 1-800-547-0712.
Notes
Freightliner recall no. Fl-423.customers can also contact the national highway traffic safety administration's auto safety hotline at 1-888-dash-2-DOT (1-888-327-4236).
Vehicles covered by recall 04V220000
| Make and model | Model years |
|---|---|
| Freightliner Business Class M2 | 2004 |
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.