How to Replace the 12V Battery — 2018-2025 Jeep Wrangler

Replacing the 12V battery in your 2018-2025 Jeep Wrangler is a straightforward fix for issues like slow cranking, dim lights, or a battery that’s reached the end of its 3-5 year lifespan. This DIY repair can save you money, costing around $100-$150 for parts compared to $200-$300 at a shop. With basic tools and this guide, even a novice can tackle this job confidently. DIY Cost: $100-$150 | Shop Cost: $200-$300

You’re done. Clear any stored codes with your scanner and complete a normal drive cycle so the vehicle’s readiness monitors reset.

If the code returns, the root cause likely wasn’t the part you replaced — go back through the diagnostic steps before swapping anything else.