Signs that a Plug-in Hybrid Electric Vehicle (PHEV) battery needs maintenance or replacement closely align with those of hybrid and electric vehicle batteries. Key indicators include:
1. Decreased Fuel Efficiency and Reduced Electric Range
As the battery degrades, it cannot hold or release energy efficiently, causing the gasoline engine to work harder and reducing overall fuel economy. For PHEVs, this manifests as a noticeable drop in miles per gallon (MPG) or a shorter electric-only driving range than usual without external factors like weather changes.
2. Dashboard Warning Lights
PHEVs have dashboard indicators such as a battery symbol, check engine light, or specific hybrid or EV system warning lights. Illumination of these lights signals a problem with the high-voltage battery or related systems. Consulting the vehicle’s owner manual or using a diagnostic tool to read error codes can pinpoint the issue. Ignoring these warnings can lead to more serious problems.
3. Sluggish Performance and Power Fluctuations
A failing battery may cause the vehicle to feel sluggish or experience inconsistent power delivery, including sudden drops in acceleration or responsiveness. This occurs because the battery cannot supply stable power.
4. Longer Charging Times and Frequent Charging Needs
If the battery takes noticeably longer to reach a full charge or requires more frequent charging than before, it may be losing capacity and efficiency.
5. Unusual Noises or Smells from the Battery Area
Buzzing, clicking, whining sounds, or unusual odors emanating from the battery compartment are warning signs of battery malfunction or failure and should prompt immediate professional inspection.
6. Vehicle Starting or Power Issues
In some cases, the PHEV may fail to start or suddenly lose power while driving. This can indicate severe battery degradation or an imminent failure.
Monitoring these signs can help identify when PHEV battery maintenance or replacement is necessary, potentially avoiding unexpected breakdowns and costly repairs. Consulting a qualified hybrid or EV technician for diagnosis and repair is recommended upon noticing any of these symptoms.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/what-are-the-signs-that-a-phev-battery-needs-maintenance/
