Replacing the Battery

  = = Battery Testing = =  

  = = Flat Battery = =  

  = = Battery Voltmeter = =  

The battery fits like a large hand in a small glove

Maximum battery size is 240mm long by 175mm wide by 175mm high.  +ve terminal to the right when terminals closest to you.   Type 075 fits best
It may be possible to fit 027 types but these are 190mm tall and have the same electrical characteristics - but I haven't tried this.

 Battery dimensions are given on this site 

In my 1.4 and 1.6 petrols I use:

Yuasa YBX5075 High Performance Battery: 12v 60Ah CCA=640  Silver Calcium

Yuasa HSB075 High Performance Battery: 12v 60Ah CCA=640  Silver Calcium appears to be the same battery but with a 5 Year Guarantee

SPECIAL NOTE - to fit the Yuasa battery, you will need to remove these two plastic do-dah's off the lower lip.  They just prise off - yes, they do! (you may need a screwdiver or old chisel to lever them off)

Silver Calcium alloy batteries are a type of lead-acid battery with grids made from lead-calcium-silver alloy, instead of the traditional lead-antimony alloy or newer lead-calcium alloy.   The result of this improvement is manifested in increased battery life and maintaining a high starting power over time.

The 075 Numax Premium Silver 12v 60AH  CCA=525 are adequate for the 1.4 petrol manuals, but I have had two of these fail in under 3 years so not recommended.

sorry, I don't know about the diesels.

Changing the Battery.

Under the bonnet, the battery is revealed by simply pulling up on the front and then rear covers.  Reseat them carefully on replacing (use a torch to ensure the clever side clips locate!)

To disconnect the Battery:

The BSI needs to go into Sleep mode, during which nothing in the vehicle should be operating.  The bonnet should be opened and left up before allowing the BSI to go to Sleep Mode.

  1. Before disconnecting the battery, turn off all gadgets and lights, close all the doors (DO NOT LOCK) and unplug any diagnostic tool.  The drivers side window should be kept open for access to the ignition key.
  2. Turn off the ignition and take out the key.
  3. After an interval of 3 minutes the battery can be disconnected
Removing the Battery
  1. Disconnect the battery terminals, and move to one side so they cannot flick back on to the battery terminals or obstruct battery removal.
  2. Next - slide the circuit board (this is the engine ECU) on the left in the photo upwards and out (no need to disconnect) and lay on top of the engine.
  3. Then push the plastic catch on the right and tilt the battery (lift right-hand side looking from the front) to remove it.
  4. Not the obvious solution...! (shown here with the fusebox cover removed; not necessary when changing batteries)
Replacing the Battery
  1. Ensure the ECU and battery connectors are out of the way
  2. Looking from the front - insert the battery; tilt it so the left side of the battery is down and slides under the protrusions, right side up to tilt it.  (see note above about the doo-dah's fitted to Yuasa bateries).
  3. Then slide sideways UNDER the protrusions (which hold the battery in place for the next time the car goes upside down) and drop the right side.
  4. When properly seated, make sure the spring clip engages on to the ledge at the bottom of the battery
Reconnecting the battery

Use the following procedure for reconnecting the battery unless told otherwise by Peugeot or Product service.  Failure to follow this procedure may result in damage to the BSI's embedded software during reconnection.

  1. All the doors have to be closed with the ignition turned off and the key taken out.
  2. Now without opening the doors, reconnect the battery and wait for 10 seconds.
  3. Turn on the headlights, you may hear a bleep.
  4. Open the door (may need a door reset)
  5. turn on the engine and check everything is working.
  6. assuming all is well - reset the clock

Some garages clip a temporary battery across the terminals which saves messing about resetting the clock.  I find this more fussy than simply resetting the clock (the radio does retain its settings).

Battery goes flat - Doors, Bonnet & Windows closed

You may have a double-whammy as

1.  when the battery dies, it can scramble the electronics making it difficult to restart
2.  if it was locked and the windows & doors closed then there is no way in.

However see below which describes a way of getting in if you are lucky.

WARNING: If you disconnect your battery - then do leave the doors unlocked and the windows open

Do not open the bonnet, lock the doors and take the battery out because if you (or some helpful assistant) then closes the bonnet there is no way of opening the doors or tailgate.

The only way out of this situation will involve grovelling under the car as below: do wear glasses in case there is a spark or oil drops into your eyes.

UNLESS - if you have this set up in advance, then see

  = = Bonnet Release = =  

Þórleifur Ugluspegill Ásgeirsson has been there, done that.   Not quite as hard as he thought.

  1. Jack up both sides of the car (in case of an accidental starting and better workspace) and have the key in your pocket or very close by.
  2. All modern cars are negative earth, so using jump leads, connect negative of a spare battery onto a chassis point (or somewhere on the engine)
  3. Then wrap about a meter of ordinary 1.5mm stiff wire around the positive battery terminal and crawl under the car from the front holding the stiff stripped wire in your right hand.
  4. You can just about see the starter above.  Touch the thick cable on the starter with the end of the stiff wire (careful not to touch chassis).
  5. You should hear some clicks as the BSI comes to life: PRESS THE "DOOR OPEN" button on the key with your other hand.  If you are lucky, this will clear the dead-lock and the door should begin to open.
  6. Once into the car, open the bonnet and fit the new battery - wait 30 seconds for the electronics to settle and you should be OK.
  7. Resolve never to do it again