Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

Tell us your ongoing tales and experiences with your French car here. Post pictures of your car here as well.
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MattBLancs
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

Unread post by MattBLancs »

Will try and make time for a quick Diagbox session tomorrow evening and see what's logged.
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

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Will read the rest of this thread in the morning:
viewtopic.php?p=798479#p798479

Seems AliExpress is flogging new units cheap
https://www.aliexpress.com/item/1005008 ... Redirect=y
£48

eBay has some new ones at £150+
https://ebay.us/m/YXcNrk

Elsewhere £250-£350. Quite a price variation!

Parts thread still down / locked it seems


Still digging
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CitroJim
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

Unread post by CitroJim »

Oh dear Matt :( Let's hope it's nothing too serious...
Jim

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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

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MattBLancs wrote: 04 Jun 2025, 22:31 Will read the rest of this thread in the morning:
viewtopic.php?p=798479#p798479
...
Still digging
I've read through the above. Interesting differences to what reported there:
My instances of "Electrical fault, Have vehicle repaired" a few months back were brief: driving along the motorway, beep, message appeared, sometimes accompanied by the SERVICE light coming on. Then maybe 30 seconds later, SERVICE light off again. On occasion would do this maybe as many as 5 or 6 times. Then nothing again for maybe a couple of weeks. Hasn't done it recently.

Didn't do either of the above during my breakdown yesterday.

Mirrors told as usual, ignition switches on (start stop button pressed) dash lights as expected up to and including glow plug light extinguishing and then the brief "bit of silence" where starter isn't triggered.

The thread confirms it doesn't need coding if Battery Protection Unit is changed.

Seems to be a couple of parts numbers:
9675350280
And
9675350380

No chance of a Diagbox session before work, hopefully at lunch time today. Holding off ordering anything as yet.
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

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CitroJim wrote: 05 Jun 2025, 05:51 Oh dear Matt :( Let's hope it's nothing too serious...
If I get away with £150, I think that'll be not bad.

This particular post is very interesting:
viewtopic.php?p=833038#p833038
Suggests a "link" between front and rear halves of the unit could be the culprit. Seems odd, if that is it, why no-one has drilled that out and installed a small bolt to make the electrical connection between front and back!

Interesting also, no-one seems to have latched onto this hypothesis!!
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

Unread post by mickthemaverick »

Having reread your breakdown account Matt you don't actually mention checking the starter motor. Have you tried a direct jump lead to motor terminal to prove the motor? :)
I used to be indecisive, now I'm not so sure!
I used to ride on two wheels, but now I need all four!
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

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This thread seems to suggest the difference between the two part numbers is (at least!!?!) one 70 amp and one 80 amp fuse positions not used one of the two variants:
viewtopic.php?p=818608#p818608


mickthemaverick wrote: 05 Jun 2025, 07:33 Having reread your breakdown account Matt you don't actually mention checking the starter motor. Have you tried a direct jump lead to motor terminal to prove the motor? :)
Morning Mick,

Not tried that as yet. Starter is only "medium buried" (unlike if it was a 1.6 where it's in the back if the block, the 2.0 it's on the front) access still a bit tricky to get at the terminals.

There's no characteristic "Click" of the solenoid in the engine bay and with multimeter on the battery terminals, no significant volt drop when the "bit of silence" happens.

Also need to think if I want to "just make the starter spin a bit" which could be just crack on with jump leads, OR see if car will start. Not sure if the safety nannying "push the clutch pedal to allow starting" would get in the way. Doable with an assistant but obviously I'll need very much longer arms and eyes on stalks to press clutch pedal and hot wire starter at same time :rofl2:
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

Unread post by RichardW »

The 1.6s used to blow the starter fuse when they got a bit old - worth a quick check (under bonnet). I would check for power at the solenoid when start button pressed. A jump lead (or screwdriver :evil: ) at the starter should prove if there is life or not - this will bypass the nanny state clutch switch etc!
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

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RichardW wrote: 05 Jun 2025, 09:35 The 1.6s used to blow the starter fuse when they got a bit old - worth a quick check (under bonnet). I would check for power at the solenoid when start button pressed. A jump lead (or screwdriver :evil: ) at the starter should prove if there is life or not - this will bypass the nanny state clutch switch etc!
Excellent, is starter fuse one of those in the battery protection module or elsewhere?

Quick scan, dump of the faults here:
Attachments
blue 308 5.6.2025 errors 7_010100~2.png
blue 308 5.6.2025 errors 1_010140~3.png
blue 308 5.6.2025 errors 2_010134~2.png
blue 308 5.6.2025 errors 3_010128~2.png
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

Unread post by MattBLancs »

Thanks RichardW, I'll get a bit brave with screwdriver or multimeter whilst Start button pushed.


The above faults look like Battery Protection Module to me - any thoughts against (understanding is in advance of starter fuse check or power to starter testing)
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

Unread post by MattBLancs »

17491255710937389404927672063362.jpg
Makes me laugh at Google translate of the last one!
Ghost in the machine!?
Ghost in the machine!?
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CitroJim
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

Unread post by CitroJim »

Loving that translation Matt!
Jim

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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

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Oxidation
Oxidation
A few pictures, dug the Battery Protection Module off it's two mounting bolts for a read of the various labels:
Stickers
Stickers
Stickers everywhere!
Stickers everywhere!
9675349880
9675349880
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

Unread post by MattBLancs »

This seller:
https://ebay.us/m/8WfUFS
Screenshot_20250605-202442.eBay.png
Lists all the part numbers together.

The two fuses identified as differences between
...280
And
...380
Are missing on the image.
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Re: Suspension sinks on Sundays! C5 X7 that works hard + 206 GTi HDi (and 406 Coupe and 306 HDi). - MattBLancs

Unread post by bobins »

That seller will be one of the high-volume Chinese importers / resellers. The Glenfield site is a mega warehouse where the stuff is turned around. No real issues with that concept, only that it'll be made of finest Chineseum and may or may not be as good as the image and description show 8-[ :? It'll be exactly the same product as listed by numerous other near identical sellers though.