Buick · 2012–2016 (US)
Buick Regal eAssist battery replacement
Buick Regal eAssist battery diagnosis and replacement across the Phoenix metro. The Regal eAssist uses the same small 115V lithium pack as the LaCrosse eAssist, and stop-start trouble is the usual first symptom.
Buick Regal eAssist hybrid battery at a glance
- System
- eAssist mild hybrid — assists the engine, never drives the car alone
- Battery type
- Lithium-ion
- Pack voltage
- 115V nominal
- Same pack as
- Buick LaCrosse eAssist
- Repair route
- Replaced as a complete assembly. Lithium packs are not rebuilt at module level
- Installation
- Included at our shop in the Phoenix metro; mobile install adds $250
- Before ordering parts
- Battery chemistry and part numbers changed within some model years. We confirm against your VIN before quoting or ordering parts.
Symptoms Regal eAssist owners report
- Auto stop-start becoming intermittent, then stopping entirely.
- Rougher engine restarts at lights.
- A dashboard battery or charging message that reads more serious than it is.
- City fuel economy slipping a little, rather than dramatically.
- A weak 12V battery producing all of the above — which is why it gets tested first.
What we test before quoting
- The 12V battery, first.
- Every stored code, recorded before anything is cleared.
- Pack voltage and cell balance.
- That the quote is for the 115V eAssist pack and not a full hybrid pack.
Prices and fitment for the Buick Regal eAssist
- Buick Regal eAssist Hybrid Battery (2012–2016) — from $3,149
Buick Regal eAssist hybrid battery questions
My stop-start has stopped working. Is it the eAssist battery?
Is the Regal eAssist pack the same as the LaCrosse's?
Price your Buick Regal eAssist
Packs and modules, with the warranty on each.
1Your make
2Your model
3What you need
We confirm the exact pack from your VIN before ordering.
Source: /vehicles/buick-regal-eassist
Questions about your Buick Regal eAssist?
Include the model year and what the car is doing.
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Not sure what your hybrid needs? We'll work it out with you.
We come to you, test the pack, the 12V and the cooling, and you get a written quote before anything is decided. No obligation.