Not A Citroen But

[coastline taxis]

Got a pug 406 in for repair which is really a citroen wannabe. anyway its a 51 plate 80k 2.0 litre hdi. Anyway its got us beat so hear goes the car drives perfect and does everything it should. Then switch it of and wait 5 mins and the headlights come on and stay on but if you open any door then the lights go off then after 5 mins they come back on, owner having to disconnect battery every night now to syop battery going flat.

No fault codes

checked fuses wiring relays etc etc

Reset bsi

 

Checked on other forums but cant see any related issues.

 

[coastline taxis]

forgot to say it only happens when the key is out and ecu goes to sleep

[Guest s_virus]

From owners with similar symptoms:

 

406-

-stuck relay

-rusty connectors in BSM

- foulty COM200

 

C5-

 

-broken connector of front courtesy light

[coastline taxis]

sorted. finaly got it fixed. It was the bsi unit the software on it was corrupt.caused by power spiking after jump starting another car and after speaking to people theres a proper procedure for jumping another car  and a procedure forputting jump leads  on most car but mainly for psa group of cars so it includes a citroen then. as when your jumping the regulator on on the running car senses a drain on itself and allows the regulator to put out more power to maintain 14.4v and if you just pull the jump lead of your causing a power surge till the regulator sdjusts itself and 9 out of 10 times is its fine guess our customer was just unlucky but anyway heres the procedure.

 

connect leads making sure you put the negative lead onto the engine of the flat car

once the flat car is started do not take the leads off

go into the charged car and switch rear demisters on and headlight and fogs.

Then remove the leads

Now switch the headlight and demisters off one at a time.

 

This allows the regulator to catch up and regulate the power output and were not talking about seconds here its actually miliseconds for it to alter itself but its long enough to fry things

[DaveHerns]

When you say "go into the charged car" do you mean the one which is giving the power ,not the one taking it ? I suppose turning on the lights etc substitutes the load of the flat battery ? No wonder people are so unwilling to give anyone a jump start these days

[paul.h]

Did you need to replace the BSI to fix the fault or just reload the software ?

[coastline taxis]

Hi dave yes its the vehicle giving the jump.

 

Paul we were always taugtht the onece the bsi and ecu were married together they could never be devorced. But a local kid reprogramed a bsi out of a scrappy and its worked fine. so im taking a citroen one down and hes going to see if he can do them aswell so heres hoping