Buick Regal Battery Location
Find the battery location, group size, and replacement procedure for the Buick Regal. Covers all years and engine options.
Last updated: 2026-11-08 • Reading time: 8 min • By AllOEMManuals Editorial Team
Quick Answer
The Buick Regal battery is typically located in the engine compartment on the driver or passenger side. Some models have it in the trunk or under the rear seat.
| Generation | Years | Top spec |
|---|---|---|
| 2015-2020 | 2015-2020 | Engine compartment (driver or passenger side) |
| 2009-2014 | 2009-2014 | Engine compartment (driver or passenger side) |
| 2003-2008 | 2003-2008 | Engine compartment (driver or passenger side) |
This vehicle's factory manual
Buick Regal: choose your year, then confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Buick Regal maintenance schedule
Know the exact battery location job for your Buick Regal
The Buick Regal battery is typically located in the engine compartment on the driver or passenger side. Some models have it in the trunk or under the rear seat.
Battery access can move between the engine bay, cargo floor, cowl, or under-seat trays depending on hybrid hardware and trim. Once the spec is confirmed, use the supplies and purchase links below to build the full one-trip shopping list before you start the repair.
Exact Vehicle Check
The button opens the factory book for this vehicle. Use the engine picker only when your trim is not the one this page already matched.
2003-2008
Representative 2003 manual branch for 2003-2008
External Pages
Regal GS
External Pages — 2003 Buick Regal GS Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined Home >> Buick >> 2003 >> Regal GS >> Repair and Diagnosis >> External Pag...
Open factory section →External Pages
Regal LS
External Pages — 2003 Buick Regal LS Service Manual ~ LEMON Manuals LEMON Manuals: Repair Knowledge Reimagined Home >> Buick >> 2003 >> Regal LS >> Repair and Diagnosis >> External Pag...
Open factory section →2015-2020
- →Disconnect negative terminal first when removing
- →Some models require radio code reset after battery replacement
2009-2014
- →Disconnect negative terminal first when removing
- →Some models require radio code reset after battery replacement
2003-2008
- →Disconnect negative terminal first when removing
- →Some models require radio code reset after battery replacement
1997-2002
- →Disconnect negative terminal first when removing
- →Some models require radio code reset after battery replacement
1991-1996
- →Disconnect negative terminal first when removing
- →Some models require radio code reset after battery replacement
1985-1990
- →Disconnect negative terminal first when removing
- →Some models require radio code reset after battery replacement
1982-1984
- →Disconnect negative terminal first when removing
- →Some models require radio code reset after battery replacement
Parts and supplies
These links search for related products. Check your year, engine, specification, and fitment with the seller before ordering.
Buick Regal Replacement Battery
Confirm the specification and fitment for your exact vehicle before ordering.
We earn a small commission if you buy through these links — at zero extra cost to you. These are search results, not verified vehicle-specific recommendations.
Battery — Manual's Parts List
The right battery, the right tools, no lost settings.
- 1Replacement BatteryShop →
Engine compartment (driver or — AGM strongly recommended for modern cars
- 2OBD2 Memory SaverShop →
Keeps radio presets, seat memory, idle learn data
- 3Terminal Cleaner BrushShop →
Corrosion under the clamp causes voltage drop
- 4Battery Terminal Protector SprayShop →
Prevents the green crust from coming back
Get everything at once
Search results vary; confirm each item and its fitment before buying.
Links go to Amazon via our affiliate store (aiautorepair-20). We earn a small commission at no extra cost to you — it keeps the site running and the data free.
One-Trip Shopping List
Recommended supplies and tools for this job, grouped so you can buy everything before the repair starts.
Replacement Battery
Match your Group Size (e.g. H6, 35) and CCA rating.
Terminal Cleaner
Removes corrosion for a reliable electrical connection.
Memory Saver
Keeps your car settings while the battery is disconnected.
Battery Carrier
Makes lifting heavy batteries much safer and easier.
Battery Charger
Helpful for revive-and-test jobs before you replace a weak battery.
Terminal Spray
Protects battery posts from future corrosion.
Project Essentials
Basic tool sets, gloves, and cleaning supplies for your Buick Regal so the job is ready when the parts arrive.
Frequently Asked Questions
- Where is the battery in a Buick Regal?
- Most Buick Regal models have the battery in the engine compartment. Some newer models or hybrids may have it in the trunk or under the rear seat. Check your owner's manual for the exact location.
- What battery location does a Buick Regal use?
- The Buick Regal battery is typically located in the engine compartment on the driver or passenger side. Some models have it in the trunk or under the rear seat.
- What battery size for a Buick Regal?
- The Buick Regal battery is typically located in the engine compartment on the driver or passenger side. Some models have it in the trunk or under the rear seat.
Find your service manual
Select your vehicle and check the available manual sections for your exact configuration.
Author & Review
Published by AllOEMManuals, founded by Lyndon Bedford, an automotive technician with 20 years of experience. He owned and operated a mechanic shop in Hurst, Texas from 2014 to 2022 and continues hands-on repair work.
Content may combine manual references, general repair templates, and AI-assisted drafting. Confirm the source, vehicle configuration, and applicability before working. Report corrections through our contact page.
Last updated: 2026-11-08