Battery defects in cars less than six years old only occur in 7 percent of vehicles manufactured world-wide, according to the Battery University. The failures that do take place can often be attributed to driving habits. Heavy use of accessories while driving short distances causes a phenomenon known as sulfation. Continuous draining and under-charging makes the electrolytes in a battery sink to the bottom. This makes the upper section acid poor and incapable of holding a charge. If this occurs in your Golf GTI MKIV, removing the battery can be tricky unless you know the proper steps to follow.
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Things you need
- Memory saver
- 10mm nut driver
- Metric socket set
- Start and stop trickle charger
Connect a memory saver to your vehicle before removing your battery by following the device’s instruction manual. Doing so will retain all of the important engine and transmission settings as well as all your personal preferences stored in your on-board computer.
Press the retaining clip on the front edge of the battery cover and lift it off. Pull the plastic shroud covering the front and side of your battery upwards and put it to one side.
Undo both battery terminal clamp nuts with a 10mm nut driver. Remove the negative cable first, followed my the positive cable.
Locate the battery hold down clamp. You'll find it tucked away out of sight on the left side on the base of the battery platform. Use a 12mm socket, extension and ratchet handle to undo the clamp bolt, and lift the battery out.
Tips and warnings
- As of February 2013, you could pick up a memory saver for around £21. Using one will save hours of re-programming time.
- If you have a sulphated battery, place it on a firm surface and rock the battery from side to side fairly vigorously. This will stir up the electrolytes and distribute them evenly throughout the casing. After that, charge the battery fully with an automatic start and stop trickle charger.
- Do not expose your battery charger to open flames or nearby sources of ignition. Batteries emit flammable gasses that can explode if ignited during the charging process.
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