ds5 hybrid electric mode

[bikesteve64]

hi when i switch on i get the message "hybrid system active" i have full hybrid battery but it will not go into electric mode ,when i turn the control to hybrid i get the message "electric mode not available" i have no air con on or lights .any ideas?? when it starts up it shows zero emissions ,but as soon as you touch accelerator engine kicks in .before as soon as you pulled up at junction it went on to zero emissions now it does not

[GiveMeABreak]

How old is the car?

The traction battery probably has insufficient charge. The batteries are only guaranteed for 8-10 years I believe, but of course will start to degrade and reduce their capacity over time. The car probably needs a good run to charge it up.

[bikesteve64]

its a 62 reg 12v battery is fully charged according to citroen the b hybrid battery should last 100,ooo miles

[GiveMeABreak]

The 12V car battery is irrelevant in this case it has nothing to do with the traction battery for the traction system which is separate and near the rear end under the boot.

Without a diagnostic there's not much you can do. If the conditions are all met for electric mode, then there may be a fault in the electric vacuum pump control if you are getting codes P1181, P11B6 returned with a professional level diagnostic tool.

As for the battery, all I'm saying is they warrant them for between 8-10 years. They're about £6.5k to replace.

[bikesteve64]

put it in diagnostics ,came up with vacuum pump relay or fuse changed fuse where can i get a relay from? e-bay have complete pumps but no relay anybody know the part number or where i can find it

[GiveMeABreak]

But did it return any of these specific fault codes?

If it does and your build date is before 13443 then it's possible this is the cause, but there are specific tests that are undertaken to check the pressure and voltage of the circuit. The remedy is to replace the complete electric vacuum unit. So may be worth discussing with your dealer and quote TSB reference B1HW016DQ0 to them.

[bikesteve64]

the garage did not use the digi=box it used some other soft ware and he just told me it said vacuum pump relay shorting to earth or fuse blown, does anybody know the actual part number for the vacuum pump or relay or where i can find it. can.t find an actual relay listed anywhere

[GiveMeABreak]

No sorry, if there's any relay it will be integrated into the Engine fuse box most likely and these components are non-user replaceable.

If you need an original, genuine part number or part diagram, and can't already find the info you need on the Forum, we do ask for a membership upgrade for official parts data as we are in turn charged for this. It will cover you for future part number requests for up to 2 years, so excellent value.

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[bikesteve64]

when is a citroen not a citroen ??? when its a ds
tried ringing my nearest citroen dealer(EVANS HALSHAW) for advice was told as it is a ds they no longer deal with them i said it is a citroen .still nothing to do with them apparently, Then tried STONEACRE CITROEN got same response nearest ds dealer to me is liecester 75 mile away

[GiveMeABreak]

They're just being picky - as the parts are the same, and early Citroen-badged DS5s are still on the parts database under Citroen! And you can order the parts from Citroen too in any case by part number.

[bikesteve64]

thanks for all your info ,i had a ds5 a few years ago (2.0 style) but just had to have the hybrid .could the stop/start be at fault as when i slow down for junctions or stop at junctions the hybrid still drives rear whees but the engine never cuts out

[GiveMeABreak]

The Stop Start is a very finicky system and I suspect you have the older system with ultra capacitor and converter unit that is hidden away behind the front wheel arch liner. This systems depends on multiple conditions to be satisfactory before it will operate, apart from the actual SS Battery itself.

[bikesteve64]

i know i may sound stupid but i am not very mechanically minded ,the symptoms are ) when i start up it shows hybrid system working and zero emissions within a few seconds engine kicks in when driving slowly i,e car parks /junctions etc it shows power driving rear wheels but engine is ticking over so NO zero emissions had a diagnostic check came back with electronic servo vacuum pump fault tried the obvious first (changed the fuse) still same could this vacuum pump really be the cause or could it be something more. the hybrid battery is showing full charge and then goes down after driving rear wheels for a while but then charges back up again so this makes me think that the battery and charging system is ok

[GiveMeABreak]

Yes it can be! See my previous post:

viewtopic.php?p=764976#p764976

[bikesteve64]

getting new vacuum pump fitted today .hope this sorts it out. does the new pump have to be married to the ecu before it will work??