The return of my E60 M5 - Wallet drained - now Supercharged!
Discussion
TheAngryDog said:
The saga continues.
...
I have to say, I am getting just a bit fed up now and if the DSC issue cannot be sorted then I am going to break the car for spares.
Saw the stuff in the chat mate, it sucks!...
I have to say, I am getting just a bit fed up now and if the DSC issue cannot be sorted then I am going to break the car for spares.
I still need to have a ride in it after the supercharger, my fingers are crossed it's granted a stay of execution!
d_a_n1979 said:
FFS 
It's little things like this that really test your mettle!
Don't lose faith; you'll soon have it sorted and back to where it needs to be
It's definitely pushing me. It's not a small thing really, the DSC issue stops me from ever being able to sell the car as a working car as such.It's little things like this that really test your mettle!
Don't lose faith; you'll soon have it sorted and back to where it needs to be
I am hoping it gets sorted this weekend, otherwise I'll just have to throw it at an indy to look at.
325iMSport said:
Limited100]shenton1975 said:
Looks nice, which blue is that?
SturdyHSV said:
TheAngryDog said:
The saga continues.
I have to say, I am getting just a bit fed up now and if the DSC issue cannot be sorted then I am going to break the car for spares.
Saw the stuff in the chat mate, it sucks!I have to say, I am getting just a bit fed up now and if the DSC issue cannot be sorted then I am going to break the car for spares.
I still need to have a ride in it after the supercharger, my fingers are crossed it's granted a stay of execution!
E90_M3Ross said:
Why would you break the car (do you mean as in totally break it/effectively scrap it?) for something that seems caused by upgrading it?
The supercharger has nothing to do with the DSC breaking. I cannot disengage traction control. Full power is not available because DSC just saps it. I can't easily sell the car whole as it's "not working" and it's worth more money in bits.Something interesting happened on Saturday.
I met up with some friends who had a look at the float on the filter side of the tank. It had become unclipped so we were pretty certain that this was the culprit for my fuel gauge woes. It turns out it wasn't, the driver's side float seems to be playing up, so no fuel on that side is being read. My car currently shows a range of ---
So I'm just going to get it booked in to one of my local places and get them to remove and re-seat the pumps and hopefully the float.
So what was the interesting thing? As I was leaving the MDM light flashed up on the dashboard for about 30 seconds, then disappeared again! Then when I got home and pretty much the instant I drove part way onto my driveway, the MDM light popped up and stayed on. I could even turn it off, turn DSC off as well.
I went around the block, still working fine, got back home, turned car off, turned it back on, still OK. left car for 5/10 mins, came back to try MDM / DSC off and no dice. So this has led me to think it may be a voltage issue.
I checked the battery resting voltage yesterday and after the car had gone to sleep it was showing 12.15v, which is apparently a bit low. I have ordered a new battery which I will fit and need to code in to the car when it arrives.
I ran some checks in ISTA as well to confirm.
If this doesn't work then it will be onto DSC Module / Alternator. The Alternator can cause odd issues when it is on its way out.
I met up with some friends who had a look at the float on the filter side of the tank. It had become unclipped so we were pretty certain that this was the culprit for my fuel gauge woes. It turns out it wasn't, the driver's side float seems to be playing up, so no fuel on that side is being read. My car currently shows a range of ---
So I'm just going to get it booked in to one of my local places and get them to remove and re-seat the pumps and hopefully the float.
So what was the interesting thing? As I was leaving the MDM light flashed up on the dashboard for about 30 seconds, then disappeared again! Then when I got home and pretty much the instant I drove part way onto my driveway, the MDM light popped up and stayed on. I could even turn it off, turn DSC off as well.
I went around the block, still working fine, got back home, turned car off, turned it back on, still OK. left car for 5/10 mins, came back to try MDM / DSC off and no dice. So this has led me to think it may be a voltage issue.
I checked the battery resting voltage yesterday and after the car had gone to sleep it was showing 12.15v, which is apparently a bit low. I have ordered a new battery which I will fit and need to code in to the car when it arrives.
I ran some checks in ISTA as well to confirm.
If this doesn't work then it will be onto DSC Module / Alternator. The Alternator can cause odd issues when it is on its way out.
Hope it (or at least some of 'it') is something as simple as a decent battery and then if that starts to drop off, an alternator.
I mean, at least once this is sorted out you've replaced a lot of potential failure points for the future!
I'm chasing a niggly ABS light fault on the Monaro, electrical stuff is s
te!
I mean, at least once this is sorted out you've replaced a lot of potential failure points for the future!
I'm chasing a niggly ABS light fault on the Monaro, electrical stuff is s
te!I thought it may be a battery issue so I have replaced and registered a new battery to no avail.
Why did i think it was a battery issue? Well oddly, on Saturday I ran several fault checks while my car was running and then when I was ready to set off driving. MDM mode engaged and then disappeared about 30 seconds later.
I had a 70 minute drive and when I arrived at home, I pulled onto the driveway and MDM engaged, but this time it stayed engaged. I could turn it on and off and disable DSC.
I went for another drive around the block without turning the car off, and all was well.
Turned the car off and then back on and it was all still working.
I then locked the car and left it for a bit and then came back to it and i could no longer engage MDM or disengage DSC.
So this led me to a battery issue. But today, changing the battery made no difference.
I've ruled out the buttons, we have been able to reflash the DSC module, but could it be that the module got damaged when the battery was initially reconnected?
I'm very much at a loss now. Pulling up to my driveway did something (it's a slight incline), but what I don't know.
I have zero codes relating to the DSC. The only codes I have are for the fuel level sensors, which for some reason have decided to not work after refitting the filter on Saturday.
Does anyone have any suggestions?? No matter how stupid it may sound? It's driving me mad.
It looks like I may have to take to a specialist as it's gone beyond me now.
Why did i think it was a battery issue? Well oddly, on Saturday I ran several fault checks while my car was running and then when I was ready to set off driving. MDM mode engaged and then disappeared about 30 seconds later.
I had a 70 minute drive and when I arrived at home, I pulled onto the driveway and MDM engaged, but this time it stayed engaged. I could turn it on and off and disable DSC.
I went for another drive around the block without turning the car off, and all was well.
Turned the car off and then back on and it was all still working.
I then locked the car and left it for a bit and then came back to it and i could no longer engage MDM or disengage DSC.
So this led me to a battery issue. But today, changing the battery made no difference.
I've ruled out the buttons, we have been able to reflash the DSC module, but could it be that the module got damaged when the battery was initially reconnected?
I'm very much at a loss now. Pulling up to my driveway did something (it's a slight incline), but what I don't know.
I have zero codes relating to the DSC. The only codes I have are for the fuel level sensors, which for some reason have decided to not work after refitting the filter on Saturday.
Does anyone have any suggestions?? No matter how stupid it may sound? It's driving me mad.
It looks like I may have to take to a specialist as it's gone beyond me now.
TheAngryDog said:
Does anyone have any suggestions?? No matter how stupid it may sound? It's driving me mad.
Alternator? What's the voltage with the engine running? Can you unplug the trigger wire and see what happens?I've not read the full thread so sorry if these aren't sensible, but you asked for ideas:
- have you checked the voltage at the unit, and the grounding points for that circuit?
- what about checking the data on the CANBUS line to the module (i.e. checking shape of waveform with oscilloscope)?
- what is the activation criteria for MDM - I would guess that there'll be conditions ( TIS lists having sufficient brake fluid, for example) - could it be not an MDM fault but an issue somewhere else?
TheAngryDog said:
I've ruled out the buttons, we have been able to reflash the DSC module, but could it be that the module got damaged when the battery was initially reconnected?
You'd usually get no comms or something when the electrical system kills a module, but there can be weirder manifestations.Edited by Jakg on Thursday 11th April 09:15
Gallons Per Mile said:
Replace that particular module. Yours may be faulty even with no 'codes'
If it was going to fail, I'd expect it to fail in the DSC OFF position, rather than DSC on. I am however looking for a replacement.Jakg said:
I've not read the full thread so sorry if these aren't sensible, but you asked for ideas:
1> no, the module is a sod to get at. Have to take the drivers side front wheel off and the arch liner, and then it's not straightforward to get to.- have you checked the voltage at the unit, and the grounding points for that circuit?
- what about checking the data on the CANBUS line to the module (i.e. checking shape of waveform with oscilloscope)?
- what is the activation criteria for MDM - I would guess that there'll be conditions ( TIS lists having sufficient brake fluid, for example) - could it be not an MDM fault but an issue somewhere else?
2> no, see above.
3> No, and I'd have no idea how to do that! Know anyone / where who can? I don't mind a travel.
4> I haven't checked brake fluid - I have no codes for it, but I will check the level!
Thanks.
TheAngryDog said:
I've ruled out the buttons, we have been able to reflash the DSC module, but could it be that the module got damaged when the battery was initially reconnected?
Jakg said:
You'd usually get no comms or something when the electrical system kills a module, but there can be weirder manifestations.
Exactly my thoughts, and we can communicate to it fine.drdino said:
Have you checked the module's connector for any signs of (water) damage? Tyre pressures ok?
No I haven't, but I do want to. Tyre pressures are fine. I've also done a reset via iDrive.E90_M3Ross said:
Gallons Per Mile said:
Replace that particular module. Yours may be faulty even with no 'codes'
Yep. Ask me how I know modules can be faulty without codes 
Thanks everyone.
TheAngryDog said:
Jakg said:
- what is the activation criteria for MDM - I would guess that there'll be conditions ( TIS lists having sufficient brake fluid, for example) - could it be not an MDM fault but an issue somewhere else?
That was just an example, obviously, TIS lists more criteria.
Jakg said:
TheAngryDog said:
Jakg said:
- what is the activation criteria for MDM - I would guess that there'll be conditions ( TIS lists having sufficient brake fluid, for example) - could it be not an MDM fault but an issue somewhere else?
That was just an example, obviously, TIS lists more criteria.
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