Auxiliary Battery Replacement at your home or office.

Our certified mechanics come to you・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Logo-yelp
CUSTOMERS LOVE US ON YELP
4.5 out of 5 (550 reviews)
Icon-warranty_badge-02
SERVICES BACKED BY OUR
12-Month, 12,000-Mile Warranty
How does YourMechanic work?    
Icon-quote-hiw
Get a quote

Choose from 600+ repair, maintenance, and diagnostic services, backed by our 12-month, 12,000-mile warranty.

Icon-calendar-hiw
Book an appointment

Tell us when to meet you at your home or office. We’ll send one of our vetted, top-rated mechanics.

Icon-fixed-hiw
Get your car fixed

Continue with your day while our mechanic fixes your car onsite. You pay only after the job is done.

How much does Auxiliary Battery Replacement cost?

It depends on the type of car you drive and the auto repair shop you go to. Our mechanics are mobile, which means they don't have the overhead that repair shops have. They provide you convenience by coming to your home or office.

YourMechanic Price
$183 to $303
Labor: $70 - $96
Parts: $113 - $207
Average dealer price
$319 to $526
Average shop price
$225 to $359
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
ServiceYourMechanic PriceShop/Dealer Price
Car Battery Replacement for 1990 Buick Skylark L4-2.3LYourMechanic Price$192.15Shop/Dealer Price$237.21 - $339.72
Car Battery Replacement for 1998 Jaguar Vanden Plas V8-4.0LYourMechanic Price$265.22Shop/Dealer Price$350.50 - $524.27
Car Battery Replacement for 2010 Dodge Charger V6-2.7LYourMechanic Price$268.41Shop/Dealer Price$332.55 - $492.27
Car Battery Replacement for 1994 Plymouth Laser L4-1.8LYourMechanic Price$205.81Shop/Dealer Price$254.32 - $367.10
Car Battery Replacement for 1990 Dodge Shadow L4-2.5LYourMechanic Price$202.96Shop/Dealer Price$250.73 - $361.36
Car Battery Replacement for 1997 Infiniti QX4 V6-3.3LYourMechanic Price$199.72Shop/Dealer Price$257.55 - $373.89
Car Battery Replacement for 2002 Dodge Ram 2500 Van V8-5.2LYourMechanic Price$200.31Shop/Dealer Price$247.49 - $356.18
Car Battery Replacement for 2001 GMC Sierra 3500 V8-6.0LYourMechanic Price$200.50Shop/Dealer Price$247.71 - $356.53
Show example Auxiliary Battery Replacement prices

Auxiliary Battery Replacement Service

What is the Auxiliary Battery all about?

The vast majority of passenger vehicles on the road today have only a single, large battery. It’s generally located under the hood, although some makes and models have the primary battery in the trunk, near the spare tire. This battery’s job is simple – it provides the electricity needed to start the engine. All other power generated during operation to power the radio, signal lights, and other accessories comes from the alternator.

However, some vehicles (notably higher-end European imports) have more than one battery. There’s the primary battery under the hood, but there’s also an auxiliary battery. These are used to power other systems on the car that require 12 volts of power, and which the alternator is not capable of powering directly. In these instances, the alternator is responsible for charging both the primary and the auxiliary battery. The primary battery delivers voltage during cranking, and the auxiliary battery runs some or most of the car’s accessories.

Like all batteries, auxiliary batteries will eventually wear out or fail. When this happens, they’ll need to be replaced.

Keep in mind:

  • Auxiliary batteries can be checked during maintenance, but it’s necessary to work with a mechanic familiar with the setup of your vehicle.
  • Auxiliary battery failure generally does not prevent you from driving, but it will create complications such as accessory functions not working.
  • Battery size, location, and cost vary drastically from one vehicle to another.

How it's done:

  • The Auxiliary battery is verified that it needs to be replaced. Accessories are removed as needed for access.
  • The defective Auxiliary battery is disconnected and removed.
  • The battery connections are cleaned and the new Auxiliary battery is installed, secured, and connected.
  • Any accessories that were removed for access are reinstalled. The Auxiliary battery is tested for operation.
  • The vehicle is tested to ensure proper operation of the Auxiliary battery.

Our recommendation:

Over time and through normal use, your battery deteriorates. Eventually, it will fail completely. Most have a lifespan of about five to seven years, but this is only an estimate. Once your auxiliary battery fails, it puts a strain on the rest of your system, and some of your accessories may not operate properly or at all. Have the problem professionally diagnosed by one of our expert mechanics as electrical issues can stem from many different problems, not just battery failure.

What common symptoms indicate you may need to replace the Auxiliary Battery?

  • AUX Battery light on in the dash
  • Some or all accessories not working properly

How important is this service?

While a failed auxiliary battery will not prevent your vehicle from driving, it can cause significant complications, including important accessories malfunctioning or not working at all. It can also put additional strain on the rest of your charging system components. Have the auxiliary battery replaced as soon as possible.

Fast and easy Auxiliary Battery Replacement service at your home or office.

GET A QUOTE FOR YOUR CAR
Backed by 12-month, 12,000-mile guarantee

Meet some of our expert mechanics

Real customer reviews from owners like you.

395 reviews
Tien
18 years of experience
Great service. Love the transparency on itemized pricing.
1998 TOYOTA CAMRY - CAR BATTERY REPLACEMENT
Want Tien's expert advice? Ask your question now. Its free!
282 reviews
Mark
6 years of experience
Fixed the problem he came to fix. Identify 2 other (legitimate) problems. Changed oil. Noticed a minor leak after oil change on test drive. And he kept at it until he made absolutely sure there is no leak.. In fact, he gave me his cell to call him if I do notice a leak today and tomorrow. Absolutely superb experience!
2002 VOLKSWAGEN PASSAT - CAR BATTERY REPLACEMENT
Want Mark's expert advice? Ask your question now. Its free!
129 reviews
Allen
31 years of experience
Very nice and super knowledgeable. Showed me everything that was wrong and was very efficient and upfront with repairs. Will be my go to mechanic moving forward.
1996 TOYOTA TACOMA - CAR BATTERY REPLACEMENT
Want Allen's expert advice? Ask your question now. Its free!
59 reviews
Steven
16 years of experience
Very professional, thorough, polite..
2007 CHEVROLET EXPRESS 3500 - CAR BATTERY REPLACEMENT
Want Steven's expert advice? Ask your question now. Its free!
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
ServiceYourMechanic PriceShop/Dealer Price
Car Battery Replacement for 1990 Buick Skylark L4-2.3LYourMechanic Price$192.15Shop/Dealer Price$237.21 - $339.72
Car Battery Replacement for 1998 Jaguar Vanden Plas V8-4.0LYourMechanic Price$265.22Shop/Dealer Price$350.50 - $524.27
Car Battery Replacement for 2010 Dodge Charger V6-2.7LYourMechanic Price$268.41Shop/Dealer Price$332.55 - $492.27
Car Battery Replacement for 1994 Plymouth Laser L4-1.8LYourMechanic Price$205.81Shop/Dealer Price$254.32 - $367.10
Car Battery Replacement for 1990 Dodge Shadow L4-2.5LYourMechanic Price$202.96Shop/Dealer Price$250.73 - $361.36
Car Battery Replacement for 1997 Infiniti QX4 V6-3.3LYourMechanic Price$199.72Shop/Dealer Price$257.55 - $373.89
Car Battery Replacement for 2002 Dodge Ram 2500 Van V8-5.2LYourMechanic Price$200.31Shop/Dealer Price$247.49 - $356.18
Car Battery Replacement for 2001 GMC Sierra 3500 V8-6.0LYourMechanic Price$200.50Shop/Dealer Price$247.71 - $356.53
Show example Auxiliary Battery Replacement prices

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com