Freightliner\amu solenoid valve
Defect Summary
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 Consequence
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.
Corrective Action
Dealers will replace the affected valves. the recall began june 29, 2004. owners should contact freightliner at 1-800-547-0712.
Similar Recalls
Other recalls from Freightliner Llc or involving Service Brakes, Air.
FAQ: Recall 04V220000
Your rights, the repair process, and what each field on this page means.
What is recall 04V220000?
NHTSA recall 04V220000 was issued by Freightliner Llc on May 6, 2004. It addresses: Freightliner\amu solenoid valve. The recall affects approximately 1,700 vehicles, with the defect involving the Service Brakes, Air component.
How do I get this recall repaired?
Contact any authorized Freightliner Llc dealer and reference NHTSA recall ID 04V220000 or the manufacturer campaign number FL-423. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.