TOYOTA
Toyota Highlander Hybrid Battery (2006–2018)
Problems, Warning Codes, Repair Options and Prices — Mobile Service in North Dallas
✓ 288-volt NiMH pack, 30 modules
✓ Module repair from $700
✓ Diagnostic credited toward the repair
Vehicles › Toyota › Highlander Hybrid
Quick Answer
Battery: Nickel-metal hydride (NiMH), 30 modules of 9.6 V — 288 V nominal
Location: Under the second-row seat
Most common codes: P0A80, P0A7F, and on older models P3011–P3029
Related model: The Lexus RX400h / RX450h uses a similar 288-volt pack
Typical fix: Module repair or full rebuild after testing
The Highlander Hybrid has used a 288-volt NiMH battery under the second-row seat since 2006. Many first- and second-generation Highlander Hybrids are now on their original pack. The good news: these batteries can usually be repaired or rebuilt.
Highlander Hybrid Hybrid Battery by Generation
| Item | 2006–2007 | 2008–2013 | 2014–2018 |
|---|---|---|---|
| Chemistry | NiMH | NiMH | NiMH |
| Modules | 30 × 9.6 V | 30 × 9.6 V | 30 × 9.6 V |
| Nominal voltage | 288 V | 288 V | 288 V |
| Location | Under the second-row seat | Under the second-row seat | Under the second-row seat |
Highlander Hybrid: What Owners Should Know
- Every Highlander Hybrid from 2006 to 2018 uses a 288-volt NiMH pack made of 30 modules of 9.6 volts, mounted under the second-row seat.
- The 9.6-volt modules are larger than the 7.2-volt modules in a Prius, so each module is a bigger part of the pack. Accurate module-by-module testing matters.
- First-generation (2006–2007) and second-generation (2008–2013) Highlander Hybrids are well past their factory battery coverage. Late third-generation (2014–2018) trucks with low miles may still be covered — check by VIN.
- The Highlander Hybrid is a heavy three-row SUV that tows and carries families, so a healthy battery and a clean cooling fan matter for performance in Texas heat.
- Check your VIN for open recalls on NHTSA.gov before paying for any hybrid repair.
Common Symptoms
- Red triangle, check engine light and “Check Hybrid System”
- Engine running more often and lower MPG
- Battery gauge swinging quickly from full to low
- Weak acceleration on hills or highway merges
- Loud battery cooling fan
- Car won’t go into READY after sitting
Problems We See Most
Weak modules
With 30 larger modules, one weak module can still trigger a warning. Load testing finds it.
Cooling system
The battery fan and intake must stay clean, especially in Texas summers.
Other hybrid faults
Inverter, sensor and 12V faults can also cause warnings. We test before recommending a battery job.
Warning Codes on the Highlander Hybrid
On the Highlander Hybrid, a worn pack usually sets P0A80 or P0A7F, often with P3000 or an INFO code. Early Highlander Hybrids can also set P3011–P3029 for individual weak blocks. We confirm every code with block-voltage and load testing before recommending anything — see our hybrid error code guide.
Highlander Hybrid Hybrid Battery Prices
| Service | Price (tax and mobile service included) |
|---|---|
| On-site full diagnostic | $150 in our North Dallas service area ($200 elsewhere in DFW) — credited toward the repair |
| Full pack rebuild | Quoted after testing — call for a price |
| Module repair (only weak modules replaced) | From $700 labor + parts |
| External pack charge (car sat too long / pack drained) | From $300 — see hybrid battery charging |
| Pre-purchase hybrid battery inspection | From $200 |
| Full battery replacement | Call for a quote |
Final price is confirmed after testing. Warranty runs from 1 to 3 years depending on the vehicle’s condition and mileage, in writing before work begins. See our full hybrid battery price list.
How DFW Hybrid Battery Handles a Highlander Hybrid
We read every code and info code, check block voltages at rest and under load, inspect the battery cooling fan and intake, test the 12V battery, and show you the numbers before you decide on a module repair or a full rebuild.
Real Highlander Hybrid jobs — coming soon
We publish real repair notes, test data and customer reviews for every model we work on. Had your Highlander Hybrid checked by us? Leave a Google review — or see our repair case studies for similar hybrids.
Frequently Asked Questions
Is the Highlander Hybrid battery the same across all years?
All 2006–2018 generations use a 288-volt, 30-module NiMH design, but the packs and housings changed between generations. We confirm parts by VIN.
Is the Highlander Hybrid battery the same as the Lexus RX hybrid?
They use a similar 288-volt, 30-module NiMH design. Parts can differ by year, so we confirm by VIN.
Can I replace only the bad modules?
Often, yes — if the rest of the pack tests healthy.
Other Toyota hybrids we service: Prius · Prius c · Prius v · Camry Hybrid · Avalon Hybrid · RAV4 Hybrid · All Toyota models
Related: Prices · All vehicles · Hybrid Error Codes · Battery Charging · Diagnostics · Warranty · Areas We Serve
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