Seat Leon Cupra 5F AGM Battery Replacement & VCDS Coding | MQB DIY Guide (Golf 7, A3, Octavia)

In this video, I’ll show you the full process of replacing the EFB or AGM battery on my 2015 Seat Leon Cupra 5F ST (MQB platform, engine code CJXA).

The video covers everything step by step:
Removing the old battery
Installing the new AGM battery
Performing battery coding with VCDS

How to install a Battery Monitor on a Seat Leon 5F Mk3 / VW Golf MK7 GTI 7R / Skoda Octavia POV
   • How to install a Battery Monitor on a Seat...  

This is a complete how-to / walkthrough guide for anyone looking to replace and code their own battery on the VW Group MQB platform.

✅ Applies to many cars on the MQB chassis, including:
Seat Leon Mk3 (5F) – all models (2012–2020)
VW Golf Mk7 / Mk7.5 (2012–2019)
Audi A3 8V (2012–2020)
Skoda Octavia Mk3 (5E, 2013–2020)
Skoda Superb Mk3 (2015–present, early models with MQB)
VW Passat B8 (2014–present, MQB-based)
Skoda Kodiaq, Karoq, and other MQB SUVs (similar battery coding process)

So if you own any of these cars, this video should help you through the battery replacement and coding process.

🔧 What you’ll need:
AGM replacement battery (correct size for your model)
Basic hand tools (sockets, ratchet, etc.)
VCDS or OBD tool capable of battery coding

📌 Don’t forget to like & subscribe if this video helps you out – and drop a comment if you have questions about your specific model!

#SeatLeon #BatteryReplacement #VCDS #Cupra5F #MQB

0:00 preparation
1:00 Disconnect old battery
2:32 Remove airbox & air guide
4:10 Remove battery
4:57 Old Banner battery & preparation
5:50 Battery reinstallation
7:23 Battery monitor reinstallation
8:22 Airbox & air guide reinstallation
10:33 VCDS battery coding
12:00 Battery vendor list