Sign in to follow this  

How to change the Battery on an is250


Description

is250/is220d

Please ensure you have the correctly orientated battery for your car connections. Do a visual check before you commence this proceedure.

If I remember correctly all you need is a 10mm spanner/socket and some petroleum jelly.

Unlock the car, you do not want the alarm going off when you connect the new one!!

Disconnect the NEGATIVE lead first, using the 10mm spanner, and move the lead to one side to avoid sparking.

Disconnect the POSITIVE lead and move the lead to one side to avoid sparking.

Undo the battery hold down clamp and put the nut somewhere safe, in your pocket is not a bad place.

Disconnect the wired connection on the left hand side of the plastic collar that covers the battery. With a bit of jiggling this collar can be lifted off the battery. You can now lift out the old battery. At this point, check that the umbrella shaped hold down strap bolt has not come out of its slot. The plastic cover removal can move it from where it should be. Check it and tape or tie it up.. now. Replacing the plastic cover is even more likely to move it out of position!!

Carefully lift in your new battery to its position, (remembering to orientate it the correct way!)

Refit the plastic cover and re-attach the wired connection on the left side of the cover.

Re-attach the hold down strap and re-connect the battery terminals starting with the POSITIVE lead. Cover any exposed terminal parts with Petroleum Jelly to prevent corrosion.

Start the car!! Should take no more than 30 mins.

You will need to ‘resync’ the electric window operations as described on page 45 of the Owners Manual.


 Report this tutorial


3 Comments

Please advise on how to remove the wired connection on the left hand side of the plastic collar that covers the battery? It seems by pressing it should slide off however no luck.

Share this comment


Link to comment

Sorry...had no idea this question was here. Only just saw this.

You are right, its a press and pull apart a bit like the headlight bulb connector

Share this comment


Link to comment

And, you should add that if you have a extra battery around, you should connect it to the the leads before removing them frlm the old battery. This way, the power is never lost, and the windows should stay programmed with tge clocks, memory seats and steering wheel. 

Share this comment


Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now