The 2014 Volvo VNM has 4 recalls, the most serious being a fire risk from an engine oil leak and a separate brake-related fire risk when the trailer hand brake sticks in the applied position.
On the engine side, excessive crankcase pressure can push a vent tube elbow off the crankcase ventilation breather, allowing engine oil to spray onto hot surfaces and ignite. The trailer brake concern involves a hand brake handle that can catch on a cutout in the trim panel and stay engaged after the driver releases it, causing the trailer's service brakes to drag continuously, which overheats the wheel end and can lead to a fire or tire blowout. There are two additional brake system concerns. A disc brake caliper on certain trucks may not have been tightened to the correct torque at the factory, and if it detaches from the backing plate, the truck can pull sharply to one side with reduced braking at that wheel. Separately, incorrect software controlling the electronic air dryer can allow oil and water to build up inside the brake system, gradually degrading braking performance across the truck.
At a glance
What can fail
The electronic air dryer's software may malfunction, allowing oil and water to contaminate the brake system.
What the fix does
Dealers will reprogram the vehicle control module and replace the air dryer filter at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
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At a glance
What can fail
The trailer hand brake handle may get stuck and not return to the off position because the trim panel cutout restricts its movement.
What the fix does
Dealers will inspect and lengthen the trim panel slot as needed to allow the brake handle to move freely.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
High pressure inside the engine crankcase can cause the vent tube elbow to loosen or separate from the breather, potentially allowing engine oil to contact hot engine surfaces.
What the fix does
The vent tube elbow will be secured, and engine software will be updated to reduce crankcase pressure during misfires. Repairs are free.
Summarized — see the official notice for exact wording, dates, and contacts.
At a glance
What can fail
The bolts securing the disc brake caliper to the backing plate may not be tightened properly, allowing the caliper to detach.
What the fix does
Dealers will inspect and tighten the bolts to the correct specification at no cost.
Summarized — see the official notice for exact wording, dates, and contacts.
