DS7 doesn't start

[mrwayne80]

Hi everyone, I need help with an issue on my 2019 DS7 Crossback HDI 1.5 130hp. While driving, the car lost power until it completely stopped and wouldn’t start again. The steering wheel does not turn; it remains stiff, meaning I cannot turn it to the right or left.

I’ve tried several things without success, and I’d like to know if anyone has experienced something similar or has any suggestions.

What I’ve done so far:

Replaced the battery with a new one.

Reset the BSI (no change in starting).

Scanned with DiagZone Pro, cleared some faults, but others remain (screenshots attached).


The car tries to start but doesn’t fully turn over.


I’m attaching a video of the start attempt, so you can hear the noise it makes.

If anyone has experienced something similar or has any suggestions on what to try next, I’d really appreciate it.

Thanks in advance!

The pictures: Ver álbum en Imgur

[GiveMeABreak]

There's no sound on the vide to hear....

[mrwayne80]

There's no sound on the vide to hear....

I just checked the video and it has audio, if thats whay you mean

[Djandree]

Hello. By the look of it Immo is preventing from starting. Had similar situation when my car wouldn't start after he picked up some faults. I am afraid that you have to scan with diagbox to see what's what. Your car can be lock and unlock from remote? Try to put your remote near this place on your steering wheel (coil from immo), then press start button, but you have to tilt your steering wheel to the left or right because steering wheel lock could kick in and prevent steering wheel from moving. Fault code (LVDC are correlated with no power), rest would be more easy to have it in English, unless ask Marc (Givemeabreak) for help

[myglaren]

There's no sound on the vide to hear....

There is but very low volume. My laptop is connected to a stereo amp and speakers and with the volume increased to about 40% it is clear enough. volume at 5~10% is quite enough for normal listening.

[wheeler]

Doesent sound like an immo issue to me, If the key wasn't detected it wouldn't even switch the ignition on never mind crank.

How many miles has it done? Timing belt ok?

Has it got enough fuel in it? looks pretty low on the gauge however never trust the fuel gauge?

Id be tempted to try a sniff of easy start to see if it fires.

[Djandree]

Heh. My ds7 was unlocking and locking the door, cranking but didn't start, tank was full. After scanning in bsi was an immo fault code. After delete car started as usual.

viewtopic.php?t=82283

[RichardW]

Early pictures are showing a code in the ECM, but this is gone from later ones. Did you clear it / what was it?

TBH my guess is that the cam chain in the head between the 2 cams has broken.

[mrwayne80]

Hello. By the look of it Immo is preventing from starting. Had similar situation when my car wouldn't start after he picked up some faults. I am afraid that you have to scan with diagbox to see what's what. Your car can be lock and unlock from remote? Try to put your remote near this place on your steering wheel (coil from immo), then press start button, but you have to tilt your steering wheel to the left or right because steering wheel lock could kick in and prevent steering wheel from moving. Fault code (LVDC are correlated with no power), rest would be more easy to have it in English, unless ask Marc (Givemeabreak) for help

I tried starting with the key fob in the reader beside the steering wheel, but I didn't try turning the steering wheel. I will try tomorrow and see what happens and it helps. Thanks for the suggestion!

[mrwayne80]

Doesent sound like an immo issue to me, If the key wasn't detected it wouldn't even switch the ignition on never mind crank.

How many miles has it done? Timing belt ok?

Has it got enough fuel in it? looks pretty low on the gauge however never trust the fuel gauge?

Id be tempted to try a sniff of easy start to see if it fires.

The car has around 150.000 miles. Not sure about the time belt but I can ask tomorrow to a mechanic to take a look to it. The car had pretty low fuel on it.

I never tried the easy start. I didn't know that even exist lol.

[mrwayne80]

Early pictures are showing a code in the ECM, but this is gone from later ones. Did you clear it / what was it?

TBH my guess is that the cam chain in the head between the 2 cams has broken.

I cleared a lot of the faults but the ones I posted on the pictures are the ones I wasn't able to clear.
There is something called "Calibration of the wake-up threshold of the battery status box in correlation with the pre-start information" which is deactivated and not sure if it should be activated. The thing is, I'm not able to do it. Also, the battery is gel (amg) but it recognize it as other type (Reinforced cycle liquid) If I change it to gel, it will go back to it.

[Djandree]

I was trying to change battery type in diagbox and it get back to previous settings. Only xtool been able to change it. I don't know anything about wake up threshold though. You didn't say if you can lock up or unlock your car, if you can move steering wheel when ignition is on. What is a state of the battery? Did you check state of health (or start/stop was working?)Did you top up diesel?

[mrwayne80]

I was trying to change battery type in diagbox and it get back to previous settings. Only xtool been able to change it. I don't know anything about wake up threshold though. You didn't say if you can lock up or unlock your car, if you can move steering wheel when ignition is on. What is a state of the battery? Did you check state of health (or start/stop was working?)Did you top up diesel?

Yes, I put diesel on it and even checked it cause I was concern about putting gas instead but it wasn't the case.
First thing I did was replacing the battery. Everytime I try to disable battery economy mode, after a few minutes, economy mode activate by itself again.
I'm going to try moving the steering wheel later and see what happens.
I think I have the start/stop disabled. Should I enable it?

[Djandree]

Hello. Ok first thing first. What kind of battery did you put in?. Did you charge new battery? (for example yuasa booklet says that new battery should be charged before installing for a 6 hours) Economy mode could be switched off via diagbox for a period of 1 hour (testing, scanning, fault repair etc) after this time bsi switching on economy mode back again. If your battery is not in optimal condition start/stop will be disabled before you will start up your engine, after engine will charge battery in theory start/stop should work properly. Secondly, did you adhere to the proper battery connecting procedure? You can find it here:
viewtopic.php?t=85065
Try do do a bsi reset if you unsure if battery was connected properly. After that, before you will try to start your engine, do a full scan and delete faults. First delete all the faults apart bsi and engine management system (unless scanning device tell you that they can be only deleted from bsi). At the end, engine ecu, and last delete all faults from bsi. After that try to start up your engine and read all codes again

[RichardW]

It's very unlikely to be a battery fault.

Look in live data when cranking. Is there a crank signal, are you seeing cam / crank synch, is there fuel pressure (180 bar required)?