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DC-DC Charger Needed for E450 AGM to Lithium Upgrade?
Solar Batteries Medium 4-6 hours installation 31

DC-DC Charger Needed for E450 AGM to Lithium Upgrade?

Yes, you should install a DC-DC charger when upgrading from AGM to lithium batteries on your E450 chassis, even with a 200 amp alternator. The alternator's charging profile is designed for lead-acid batteries and won't properly charge lithium batteries.

Fix Tiffin Phaeton Parking Brake Limp Mode Issue
Chassis Medium 2-4 hours 24

Fix Tiffin Phaeton Parking Brake Limp Mode Issue

This appears to be a faulty parking brake switch or wiring issue causing false signals to the engine control module. The parking brake system shouldn't trigger limp mode under normal operation, indicating an electrical problem that needs diagnosis.

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