Audi A4 B9 (2016 - 2025) Battery Replacement

🔋 Audi A4 B9 (2016–2025) Battery Replacement | Step-by-Step DIY Guide 🔋 Replacing the battery on an Audi A4 B9 requires more than simply swapping the old battery for a new one. In this video, I'll show you how to safely replace the battery, explain the correct procedure, and discuss battery registration/adaptation where applicable. Whether your battery has reached the end of its life or you're experiencing starting issues, this guide will help you complete the replacement with confidence. 🚗 In this video you'll learn: Where the battery is located on the Audi A4 B9 How to safely disconnect and remove the old battery Installing the new battery correctly Recommended battery specifications Whether battery registration or BMS adaptation is required Final checks after the replacement ⏱️ Timestamps: 0:17 - Jumper Point Location 0:41 - Battery Location 0:54 - Removing the Old Battery 3:06 - Installing the New Battery 5:20 - Battery Size 6:12 - BMS Reset/Coding 7:38 - Startup Warning Lights ⚡ Signs your Audi A4 battery may need replacing: Slow engine cranking Battery warning light on the dashboard Start/Stop system unavailable Electrical faults or warning messages Difficulty starting the engine 🔋 Recommended Battery Size ✅ Type: EFB/AGM ✅ Capacity: 80Ah - 90Ah ✅ Cold Cranking Amps: 720 - 800 CCA ✅ Suitable for Audi A4 B9 models manufactured between 2016 and 2025 ✅ Compatible batteries and tools available from Amazon you can use for this vehicle: US & CA viewers: 🔗 MARXON 80Ah AGM: https://amzn.to/4p5am0c 🔗 ACDelco 80Ah AGM: https://amzn.to/4r6R9xl 🔗 Battery post/terminal cleaner: https://amzn.to/4ibUTJR 🔗 Socket set: https://amzn.to/4oLWs2H 🔗 Xtool A30M OBD2 scanner: https://amzn.to/4gO7eFq **👇 For batteries less than 2 years old, a good charger might fix it 👇** 🔗 Battery charger I've personally used for over 3 years: https://amzn.to/4aU0kdW ✅ Has a fan to keep it cool ✅ LCD display shows charging amps ✅ Tests battery status ❎ No AGM charge function but normal charge sufficient for battery test 🔗 CTEK battery charger with AGM charge function: https://amzn.to/4aZVnB8 European viewers (From our experience, Varta batteries have proven to be reliable and long-lasting): 🔗 Varta 80Ah EFB: https://amzn.to/47Qzpi8 🔗 Varta 80Ah AGM: https://amzn.to/4rqaGZV 🔗 Battery post/terminal cleaner: https://amzn.to/49nOAk3 🔗 Socket set: https://amzn.to/4pSfuGh 🔗 Xtool A30M OBD2 scanner: https://amzn.to/3RR6THV **👇 For batteries less than 2 years old, a good charger might fix it 👇** 🔗 Battery charger I've personally used for over 3 years: https://amzn.to/3T8KG8k ✅ Has a fan to keep it cool ✅ LCD display shows charging amps ✅ Tests battery status ❎ No AGM charge function but normal charge sufficient for battery test 🔗 CTEK battery charger with AGM charge function: https://amzn.to/4j7Sm3F These are affiliate links, which means I may earn a small commission (at no extra cost to you). It helps support the channel and keeps these tutorials free. Thanks for your support! 🙌 Replacing your Audi A4 battery correctly helps ensure reliable starting and proper operation of the vehicle's electrical and battery management systems. Follow along with this step-by-step tutorial to make the job straightforward and avoid common mistakes. 👍 If you found this video helpful, please Like, Subscribe, and Share for more DIY battery replacement guides, vehicle maintenance tutorials, and automotive repair tips. #AudiA4 #AudiA4B9 #BatteryReplacement #AudiBattery #CarBatteryChange #DIYCarRepair #AudiMaintenance #BatteryRegistration #BMS #CarMaintenance #AutoRepair #AudiA4B9Battery --------------------------------------------------------------------------------------------------------------------------- Follow Us on Social Media: 🔗 Instagram: @auto_mobile_battery Since 2019, dad and I have replaced 1000's of car batteries on stranded customers cars. We're putting everything we've learned into these videos to make it easier for you, all we ask in return is to SUBSCRIBE to this channel to show your support!