---
id: faq-0077
title: "How do I know if my battery needs replacement?"
category: faq
subtopic: service-and-maintenance
page_type: faq
source_url: "https://www.castlecadillacmchenry.com"
tags: ["battery", "electrical", "maintenance"]
questions:
  - "When should I replace my car battery?"
  - "What are signs of a dying battery?"
  - "How long do car batteries last?"
related: [electrical-service, maintenance-schedule]
dealer: Castle Cadillac McHenry
---

Most car batteries last 3 to 5 years, but extreme temperatures, frequent short trips, or leaving lights on can shorten that. Warning signs include slow engine cranking, dimming headlights, a clicking sound when turning the key, or a battery warning light.

A weak battery can leave you stranded, so it's worth checking proactively rather than waiting for failure. Cold weather makes old batteries work harder, so McHenry winters are an ideal time for a battery health test.

Castle Cadillac McHenry offers battery testing and replacement with genuine OEM batteries backed by warranty. Our Service team can test your battery free and install a replacement quickly if needed. **Call (779) 265-4427** to book a battery check or replacement.