The worst 2015 Mack LR6 problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
Recalls 1
Engine and engine cooling: engine
- What is wrong
- Mack Trucks, Inc. (Mack) is recalling certain model year 2011-2016 Mack MRU and LEU trucks manufactured June 25, 2010, to April 30, 2015, and 2015-2016 LR6 trucks manufactured from December 18, 2014 through March 6, 2015. Excessive engine crankcase pressures may cause the 90-degree elbow of the vent tube assembly to detach from the crankcase ventilation breather, possibly allowing engine oil to come into contact with hot surfaces.
- Risk
- If engine oil comes into contact with a hot surface, there could be an increased risk of a fire.
- Remedy
- Cummins will notify owners on behalf of Mack, and Cummins service centers will administer the repairs which include securing the ends of the 90-degree elbow and reprogramming the electronic control module (ECM) with software that can adjust the engine output under misfire conditions to limit crankcase pressures. These repairs will be performed free of charge. The recall began on June 12, 2015. Owners may contact Mack customer service at 1‑800‑528‑6586 or Cummins Inc. at 1‑800‑343‑7357. Mack's number for this recall is SC0391.
Recall number 15V275000 · Recall details
Technical service bulletins for the 2015 Mack LR6 80
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- CBR: Equipped With An Automated Manual Transmission Model D or F ( AMT-D, AMT-F, mDrive) Missing X1 Value...
- CBR -Telematics Gateway (TGW) Connect Ability Issues
- Cbr
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- Cbr: tgw
- Emissions Campaign: Mack Trucks has determined that certain 2014
- Aftertreatment Diesel Exhaust Fluid (DEF) Tank, Level Sensor, Replacement
- Barksdale Leveling Valve, Leak Test
- CBR: Programming Failure
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Questions about the 2015 Mack LR6
Is the 2015 Mack LR6 reliable?
Owners have filed 0 complaints about the 2015 Mack LR6.
What is the most common problem with the 2015 Mack LR6?
There are not enough complaints to tell.
How many recalls does the 2015 Mack LR6 have?
1 recall, covering engine and engine cooling.
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