203 Battery Change Procedure


Jun 30, 2005
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After so much right and wrongs on this subject a couple of us thought it might be helpful to other members to help explain what can go wrong with battery changes and jump starting.

First of all i wouldn’t recommend anybody jump starting from there car to another or other way round!!!

You can buy jump and carry booster packs which have surge protection built in, when you connect up to your flat battery the jump pack slowly increases the voltage up to 12.50 volt, hence no surge, also taskmaster sell a good set of jump leads which have a surge protector built in.

Flat batteries

For whatever reason you might find yourself with a flat battery, rule number one, don’t jump from another car! The other car would be running and the battery voltage would be far higher than the safe 12.50 volt.

203 (and other) models tend to blow the rear sam, have also seen dashboard modules blown, EIS blown, front sams and so on, all due to jumpstarting! I admit sometimes you might not have any other choice but to use jump leads, if that’s the case my advice would be, key out, heads lights on, other car not running, connect leads, start other car, tick over only, turn light back off and let other car just put some charge in for 5 mins, no need to rev the hell out of the car your using to jump, max outlet from alternator is around the 1500rmp mark, then try starting.
As said that’s only my advice!!!!

Battery changes (203)
Needed will be a set of leads and a slave battery,
push the red button on the bonnet stay in to open the bonnet to its full
just next to the battery you will find a red cap with a + on it, this is the so call jump point, this is where you would connect your positive lead from the slave battery, on the off side you will find an earth point bolted to the top strut, use this for your earth lead from slave battery, now the car is live, disconnect the positive lead from the battery and tape up fully, this will stop any shorts, where the lead comes thought the plastic, you can lift up the small bit of trim and remove lead right out the way, just be aware that the clips holding this trim are very sharp, then what I do is pull the lead right out the way and tuck it under the brake pipes, hence the tape, disconnect neg lead and battery clamp, replace battery, do not disconnect slave battery until both leads are back onto new battery otherwise damage COULD be caused.

This is only the way I change them and I’m sure other people will have their thoughts on this, if it saves just one person spending out then I will be pleased,

if you want to add any views or anything you think I have missed Malcolm please feel free to correct or add,
Cost of rear sam about £225!


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Feb 8, 2006
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