Flash: Hybrid Control Processor (HCP) Updates
Ram technical service bulletin 08-028-20 for 2020 Ram 1500.
- Bulletin number
- 08-028-20
- Component
- Engine and engine cooling
- Summary
- Flash: Hybrid Control Processor (HCP) Updates This bulletin involves updating the HCP with the latest available software. Customers may experience the following:Bump or shutter felt during engine start/stop (ESS) situation. The following enhancement is also included in this software update:Improvements to engine start stop quality to eliminate bumps or shutter. Improvements to motor rotor temperature model for robustness.
Owners of these vehicles have filed 166 complaints in the engine category.
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