Buick · 2012–2016 (US)

Buick LaCrosse eAssist battery replacement

Buick LaCrosse eAssist battery diagnosis and replacement across the Phoenix metro. eAssist is a mild hybrid on a small 115V lithium pack — far smaller and cheaper than a full hybrid pack.

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Buick LaCrosse eAssist hybrid battery at a glance

System: eAssist mild hybrid — assists the engine, never drives the car alone
Battery type: Lithium-ion
Repair route: Replaced as a complete assembly. Lithium packs are not rebuilt at module level
Installation: Battery only. Fitting at our shop in the Phoenix metro is $250 on top of the pack price.

Get a price for your Buick LaCrosse eAssist

Pick what you need and how to reach you. You get a written quote before anything is ordered.

Symptoms LaCrosse eAssist owners report

Auto stop-start no longer working, or working erratically.
The engine restarting roughly at lights where it used to be smooth.
A modest but steady drop in city fuel economy.
A battery or charging-system message on the dash.
12V faults mimicking eAssist problems — tested first, always.

Prices and fitment for the Buick LaCrosse eAssist

Buick LaCrosse eAssist Hybrid Battery (2012–2016)

Buick LaCrosse eAssist hybrid battery questions

Is eAssist a real hybrid?

It is a mild hybrid. The electric side assists the engine and runs the stop-start system; it never drives the car on its own, which is why the pack is small.

Why was I quoted so much for an eAssist battery?

Often because the quote is for a full hybrid pack. At 115V the eAssist pack is a much smaller assembly. Ask which pack is being priced before you accept the figure.

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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.

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