17/06/2026
⚡ JLR Mild Hybrid Charging Fault - Expert Diagnostics Uncover The Real Cause!
When a Land Rover Discovery Sport MHEV arrived with a "Charging System Fault" warning and fault code P0658-16, initial testing pointed towards a failed starter/generator.
After replacing the component, however, the fault immediately returned and the 12V battery still wasn't charging!
🔎 Looking Beyond The Obvious
The workshop contacted the Opus IVS 360 team, where one of our JLR Master Technicians remotely connected to the vehicle using the DrivePro 2 and JLR's Topix Cloud dealer platform.
👀 The Critical Piece Of Information
By analysing live data from the DC to DC converter, the technician identified a mismatch between the requested and active operating modes, confirming that the converter itself had failed.
🛠️ The Right Repair
After replacing the DC to DC converter, the Opus IVS 360 team carried out a second remote session to code and programme the new unit, bringing the system back online and clearing all faults.
✅ Getting Back On The Road
Following final checks and a road test, the charging system was restored and the vehicle returned to normal operation!
🚀 Expert diagnostics and remote programming support can prevent unnecessary repeat repairs and help workshops reach the correct fix faster!
ℹ️ Looking to read more about how our expert technicians helped to solve this complex fault and also gain some additional insight in the process? Then click below to read the full case study:
https://hubs.ly/Q04lG-fN0