Technical Service Bulletins

Ram Towing Requires an Upgrade

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The integrated trailer brake module (ITBM) on some Ram trucks may need a software update if the customer describes an intermittent condition where the trailer brakes feel as if they are not working for the first few brake applications.

| Photo Credit: Chrysler Corp.

This bulletin applies to 2015-2016 RAM 1500, 2500, 3500 and 4500 trucks, and involves updating the integrated trailer brake module (ITBM) with the latest software. The customer may describe an intermittent condition where the trailer brakes feel as if they are not working for the first few brake applications. This condition reportedly only happens if the trailer has been connected before the engine was started.

Using a scan tool, first verify that all systems are functioning as designed. Address any issues before the update. Reprogram the ITBM with the latest available software and clear any DTCs that may have set during the reprogramming.

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