The worst 2003 Freightliner MT55 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
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Recalls 1
Service brakes, air: supply: check valve
- What is wrong
- Certain freightliner school bus chassis, heavy trucks, and thomas built school buses manufactured between july 2002 and july 3, 2007, equipped with bendix sr-7 spring brake control valves. The parker scv brass 90 degree single check valves (scv) which attach to the supply port of a bendix sr-7 spring brake modulating valve can break apart. Pieces of the parker scv can become lodged inside the sr-7 spring brake modulating valve, potentially causing either leakage out of the sr-7 valve or preventing air from properly exhausting from the sr-7 valve. Also, due to a manufacturing defect in the internal rubber check valve inside the sr-7 spring brake modulating valves, the valves can become deformed and not seat properly.
- Risk
- These conditions could either result in leakage and cause a delay in the application of the spring brake without warning or possibly lead to unintended vehicle rollaway or brake drag which could result in a vehicle crash, personal injury, or death.
- Remedy
- Freightliner will notify owners and repair the vehicles free of charge. The recall began on january 11, 2008 to freightliner, sterling, and freightliner custom chassis owners; to thomas built bus owners on february 1, 2008. Owners can contact freightliner at 1‑800‑547‑0712.
Recall number 07V302000 · Recall details
Technical service bulletins for the 2003 Freightliner MT55 2
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
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Questions about the 2003 Freightliner MT55
Is the 2003 Freightliner MT55 reliable?
Owners have filed 0 complaints about the 2003 Freightliner MT55.
What is the most common problem with the 2003 Freightliner MT55?
There are not enough complaints to tell.
How many recalls does the 2003 Freightliner MT55 have?
1 recall, covering service brakes, air.
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