Electrical supply and module communication
Multiple warnings can share a single root cause such as low 12-volt voltage, a weak ground, water intrusion, a fuse-box supply fault or a disrupted vehicle network. Start with battery condition, charging output, cranking voltage and a complete module scan. Compare fault timestamps and communication patterns before condemning a module. Some later models include 48-volt mild-hybrid or high-voltage components requiring special precautions.
Manufacturer-specific considerations
A no-crank fault should be separated from crank/no-start. Verify starter authorization and supply before fuel or ignition tests; on newer models check gateway wake-up and key authorization when relevant.
Repair confirmation
After repair, verify several ignition and sleep/wake cycles, charging behavior and that all affected modules communicate.
The source research addresses LR4 applications described as 2014 (LR4 L319). The correct testing depends on the exact year, engine, drivetrain and equipment.
Symptoms an owner may notice
Battery warning lamp and ECO Stop/Start not available message despite normal alternator charging.
Battery warning and disabled stop/start with network faults.
Codes documented in the research include U0146, U0102. A code indicates a monitored condition and is not proof that one particular component failed.
What diagnosis involves
The available case notes describe checks such as Check alternator charging; Inspect/load-test both batteries. The actual vehicle must be evaluated before any repair recommendation.
Findings recorded in the cases included Charging normally; Auxiliary battery completely dead. These observations may guide testing but cannot be assumed on another vehicle.
Documented causes and repair decisions
In the researched cases, identified causes included Completely dead stop/start auxiliary battery. A different vehicle with the same symptoms may have a different underlying problem.
Reported successful repairs in the research included Replace auxiliary battery and clear codes. These are external case outcomes, not claims that Mich’s performed those specific repairs.
If your LR4 has a similar symptom, contact Mich’s Foreign Cars in Hickory, NC at 828-324-6012. Share the model year, engine, exact warning messages and the conditions when the problem occurs.