Hybrid battery replacement in Tubac, Arizona

Tubac sits at about 3,200 feet in the Santa Cruz valley, so summers are gentler on a pack than in Phoenix. The drive home from Tucson stops at the northbound I-19 checkpoint, and a long, slow queue there in summer is the hardest stop-start duty a hybrid battery does — it's often where a tired pack first sends the car into reduced power.

Every job starts with a test, not a quote: we load-test the pack where the car is parked in Tubac before anyone talks about a new one.

Tubac sits about 2,120 feet higher than Phoenix, at 3,210 feet. Tubac's milder summers mean the old pack probably lasted longer than it would have in Phoenix, and a new one will have an easier life too. Winter is the other half of the picture: cold nights don't hurt the hybrid pack much, but they find a weak 12V battery fast — and a weak 12V can make a perfectly good new pack look faulty. We test the 12V on every replacement visit.

• A new pack still accepts less charge on a cold morning — less regenerative braking for the first few miles is normal.
• Big daily temperature swings are hard on 12V batteries. Test yours each autumn.
• Dust from dirt roads and open country reaches the cooling intake; keep it clear.

Tubac is 2 hours 30 minutes from central Phoenix each way. We do make that drive — it's booked as a scheduled visit rather than a call-out, so call ahead rather than waiting for the car to strand you.

Tell us the year and model, the warning lights and whether the car holds READY. On the day we test it, quote in writing, and fit the pack where it's parked.