- a) First, on any vehicle with central locking, it is a wise precaution to remove the key from the ignition and to keep it with you, so that it does not get locked in if the central locking should engage accidentally when the battery is reconnected.
- b) If the vehicle is equipped with a Peugeot factory option anti-theft alarm system, the system should be de-activated before disconnecting the battery. To de-activate the system on early models, a master switch is provided in the engine compartment, behind the right-hand headlight. The switch is operated by a dedicated key and is protected by a plastic cover. Lift up the cover and turn off the switch using the dedicated key. When reconnecting the battery, as soon as the battery is connected, the alarm is automatically activated. Use the remote transmitter to turn off the alarm, then activate the alarm siren using the dedicated key. To de-activate the system on later models, switch on the ignition switch and then within ten seconds, depress the alarm switch on the side of the steering column shroud and hold for approximately two seconds. The alarm indicator light should then flash rapidly for three seconds indicating the alarm is deactivated. To re-activate the system once the battery is reconnected, lock then unlock the vehicle using the remote transmitter; the alarm will be functional again the next time the vehicle is locked with the remote transmitter.
- c) If a security-coded audio unit is fitted and the unit andlor the battery is disconnected, the unit will not function again on reconnection until the correct security code is entered. Details of this procedure, which varies according to the unit fitted, are given in the vehicle owner's handbook. Ensure you have the correct code before you disconnect the battery. If you do not have the code or details of the correct procedure, but can supply proof of ownership and a legitimate reason for wanting this information, a Peugeot dealer may be able to help.
- d) On certain petrol injection engines, the electronic control unit is of the "self-learning" type, meaning that as it operates, it also monitors and stores the settings which give optimum engine performance under all operating conditions. When the battery is disconnected, these settings are lost and the ECU reverts to the base settings programmed into its memory at the factory. On restarting, this may lead to the engine running/idling roughly for a short while, until the ECU has re-leamed the optimum settings. This process is best accomplished by taking the vehicle on a road test (for approximately 15 minutes), covering all engine speeds and loads, concentrating mainly in the 2,500 to 3,500 rpm region.
Devices known as "memory-savers" (or "code-savers") can be used to avoid some of the above problems. Precise details vary according to the device used. Typically, it is plugged into the cigarette lighter and is connected by its own wires to a spare battery; the vehicle's own battery is then disconnected from the electrical system, leaving the "memory-saver" to pass sufficient current to maintain audio unit security codes and any other memory values and also to run permanently-live circuits such as the clock.
Warning: Some of these devices allow a considerable amount of current to pass, which can mean that many of the vehicle's systems are still operational when the main battery is disconnected. If a "memory saver" is used, ensure that the circuit concerned is actually "dead" before carrying out any work on it!
(Original can be viewed at www.peugeotbook.ru)