✅ Fixed
Found 150mA parasitic drain. Isolated to interior light circuit — door switch staying on. Replaced door pin switch $15. Battery maintaining charge perfectly.
Toyota Prius 2015 Battery draining overnight parasitic drain
Toyota
Prius
2015
On This Page:
🔍 Symptoms
⚙️ Causes
🔧 All Repairs
⚠️ Avoid These
🧾 Driver Reports
🔗 Similar Faults
🩺 Related Symptoms
⚡ Quick Summary
Severity Level
Medium
Safe to Drive?
⚠️ Drive with Caution
Safety Impact
Indirect risk — worth monitoring, not urgent
Urgency Level
🟡 Monitor Closely
Toyota Prius 2015 battery dead every morning. Replaced battery twice. Something draining it overnight. 151736 km. This fault code is stored when the engine control unit detects a specific fault condition. Common causes include sensor failures, wiring faults, and component wear. Always read additional fault codes before replacing parts — multiple codes together provide a clearer diagnosis. Clear the code after repair and test drive to confirm the fault does not return.
🔍 Symptoms
📍 Battery draining overnight
📍 Toyota Prius
⚙️ Possible Causes
Battery draining overnight
Toyota Prius
Possible: Found 150mA parasitic drain. Isolated to interior light circuit — door switch staying on. Replaced door pin switch $15. Battery maintaining charge perfectly.
Repair / Solution
Based on 66 driver confirmations
⚠️ Wrong Diagnosis?
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Toyota Prius 2015 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
🧾 Driver Reports
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