July 9, 2025 Service bulletin

Cbr

Volvo technical service bulletin CBR 2443 072025 for 2025-2026 Volvo VNL (4).

Bulletin number: CBR 2443 072025
Component: Unknown or other
Summary: CBR - The truck’s trailer detection system uses a brief pulse of compressed air through the red trailer supply line to detect a connected trailer, but this pulse can inadvertently re-lock air-actuated tandem slide systems; this procedure outlines a method to mitigate the issue while sliding the trailer tandems.

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