2016 Toyota Mirai Battery

Watch for slow cranking, dim or flickering lights, dashboard battery/charging warnings, and a 12‑volt battery age over 4 years.

On a 2016 Toyota Mirai, the 12‑volt auxiliary battery powers control modules and accessories; weakening voltage shows up as hesitant starts and electrical glitches. In Murray and the Greater Salt Lake City area, seasonal temperature swings can accelerate wear. If you notice these symptoms, schedule a test before you’re stranded.

• Sluggish start or repeated start attempts
• Dim headlights or interior lights at idle
• Battery/charging warning light or stored codes

Yes — a Toyota dealer install includes diagnostic testing, a charging‑system check, OEM‑spec parts, and proper core disposal.

Parts stores may offer a lower battery price, but dealership service verifies the Mirai’s auxiliary power and charging health, updates memory settings as needed, and documents work on your repair order. At Larry H. Miller Toyota Murray, you’ll also see any open campaigns or software updates that may affect performance.

• Battery and charging‑system diagnostic before install
• OEM‑spec replacement and proper fitment
• Documentation for service history and warranty support

No — a weak 12‑volt battery can cause no‑start situations and intermittent electronic faults.

While the Mirai’s hydrogen fuel‑cell system drives the vehicle, the 12‑volt battery is essential to power up control modules and relays. If it’s failing, you may experience erratic operation or be unable to start after short stops. In the Salt Lake Valley, cold mornings can make a marginal battery fail suddenly.

• Plan a test and replacement before complete failure
• Avoid frequent short trips until diagnosed
• Use our online tool to schedule service

Your visit includes battery testing, charging‑system check, safe removal/installation, electrical resets as needed, and eco‑friendly battery recycling.

For a 2016 Toyota Mirai, our factory‑trained team verifies the auxiliary system, installs an OEM‑spec unit, and confirms proper module wake‑up and accessory operation. You’ll receive clear documentation and can check current service specials before approving work.

• State‑of‑health and state‑of‑charge test
• Terminal/ground inspection and corrosion cleaning
• Post‑install validation of warning lights and memory items

Yes — clock, radio presets, trip data, and auto‑up window calibration may reset during a 12‑volt battery swap.

On the 2016 Toyota Mirai, module power loss can clear convenience settings and may require window or sunroof re‑initialization. Our technicians preserve memory when possible and re‑calibrate affected functions during final checks.

• Expect to re‑set time, presets, and trip meters
• Power window/sunroof auto functions may need re‑learn
• We verify no warning lights remain after service

Most 12‑volt batteries last about 3–5 years, depending on climate, driving habits, and maintenance.

In Northern Utah, winter cold and summer heat can shorten lifespan, especially with frequent short trips. If your Mirai’s battery is older than 4 years or cranks slowly, have it tested. Proactive replacement reduces the risk of a no‑start in Murray or Salt Lake City traffic.

• Test annually after year 3 or before seasonal temperature swings
• Keep terminals clean to reduce voltage drop
• Use an OEM‑spec battery to maintain reliability

Get an up‑front written quote from Larry H. Miller Toyota Murray before any work begins.

Pricing depends on the exact OEM‑spec battery required for the 2016 Toyota Mirai and any needed terminal or cable service. We provide transparent parts and labor line items and post current offers on our service specials page. Request your estimate online or by phone.

• Written estimate with parts and labor detail
• OEM‑spec 12‑volt auxiliary battery for the Mirai
• Optional terminal/cable service if corrosion is present

Most 12‑volt battery replacements are completed the same day at our Murray, UT service center.

Actual time varies with diagnostics, corrosion remediation, and post‑install checks on the 2016 Toyota Mirai. You can choose a convenient time using our online tool and wait in the lounge or arrange a drop‑off.

• Same‑day service availability for most appointments
• Diagnostic and charging‑system test included
• Schedule service to lock your time

Drivers from Murray, Salt Lake City, Sandy, West Jordan, South Jordan, Millcreek, Holladay, and Taylorsville rely on Larry H. Miller Toyota Murray for accurate testing and OEM‑spec replacement of the 2016 Toyota Mirai’s 12‑volt auxiliary battery. Utah’s winter cold and summer heat can stress batteries, especially with short trip cycles that limit recharge time. Opened in 1979, our dealership has supported Northern Utah owners for decades with factory‑trained Toyota care tailored to local conditions. We’ll confirm your Mirai’s starting and charging health and document findings on your repair order so you can decide confidently. Find us at 5650 South State Street, Murray, UT 84107. Have questions or ready to book? Use our online tool to schedule service and check current service specials.

Our process for the 2016 Toyota Mirai focuses on accuracy, safety, and clean installation. We start with a state‑of‑health and state‑of‑charge test, then inspect terminals, grounds, and cables for corrosion or damage. After safely disconnecting power, we install an OEM‑spec 12‑volt auxiliary battery, torque connections to spec, and apply protective terminal treatment. Post‑install, we verify starting voltage, check for warning indicators, and re‑initialize memory functions as needed. Youll receive a clear repair order with parts and labor line items and can review current service specials before approval. Ready to proceed? Schedule service at your convenience.

The 2016 Toyota Mirai uses a 12‑volt auxiliary battery that powers control modules, relays, lighting, and accessories; it does not propel the vehicle but is essential for system startup. Exact group size, CCA rating, and fitment should match Toyota OEM specifications for your VIN and build; our team verifies these details before installation and confirms proper securement in the Mirais designated compartment. If youre unsure of the correct specification, bring your 2016 Toyota Mirai to Larry H. Miller Toyota Murray in Murray for an OEM‑spec replacement schedule service.