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#11
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+1 on what Clavurion said - ignition switch. You have multiple simultaneous electrical issue so you either have a supply issue (which now seems unlikely) or a fuse/switch issue. Start with ignition switch but also check main fuses in the boot/trunk - for loose connections or corrision.
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
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#12
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Had a look on the boot fuses they look fine visually but i'll have a second pass with a multimeter to be sure. Same for the glove box ones. Is there any other switch or similar component that could be causing electric troubles and should be looked at? |
#13
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There's a joint in the main supply cable at the front bulkhead but that's not likely to be an issue here as it would affect starting (current) and you don't appear to have a starter (motor speed) issue.
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#14
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Reminds me of the crazy issues I had that sound almost like yours. But in my case , among other unrelated errors with nothing to do with the alternator, I would get a consistent error "DME- 2E95 Generator - Communications loss - Fault currently present - Fault would not cause a warning Light". Replacing the alternator fixed every bizarre issue the vehicle had.
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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M. |
#15
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#16
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Little update on the situation.
Replaced the brake switch: solved the brake tail lights always on issue. Replaced ignition switch: solved airbag light, trans fail message, hard steering, all non-working things (wipers, heat seats, vanity light). So pretty much all weird gremlins. Also no more coolant temp drop neither overconsumption. Crazy what a small electronic part can do! Replaced battery also, the old one died completely (5v), checked for power drains but it seems there is none, the new battery always keep good voltage. Thanks folks for the advices, wouldn't have figured that out myself Not all solved tho, i still get random limp mode (for ex when pulling hard to merge in highway, stabilize at 130kmh, floor it, and nothing happens except downshift and stuck to 3k rpm). + the message "4x4 DSC off" pops up after few minutes of driving + the yellow (!). No more error codes but the glow plugs ones. Could it be that? Don't have any symptoms, starts easily, perfect idle, no smoke). |
#17
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Glow plug errors won't cause the DSC issue but it's worth fixing, since the glow plugs are used for more that just cold starts. If you have multiple glow plug codes, it's likely to be the glow plug controller that is at fault. Not a bad job to replace the controller and all six glow plugs. As for the DSC error, it seems likely to be related to the transfer case gear, since it only pops up under hard acceleration. Have you checked the nylon gear for wear? https://xoutpost.com/bmw-sav-forums/...-issues-3.html
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#18
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If this is not DSC related a tired inline fuel pump could cause this RPM limiter effect. On these M57N engines there is no sensor for fuel supply pressure like there was on previous M57 versions though the supply system is otherwise the same. If you renew the inline fuel pump (Pierburg is OEM) renew the fuel filter too because they are located in the same space.
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E39 530dA -02 M-Sport Messing metallic E53 X5 3.0dA -06 Sport Stratus grey Last edited by Clavurion; 06-21-2021 at 08:34 PM. |
#19
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Both DSC/4x4 message and the limp mode aren't appearing on same time.
After the ignition switch job, the DSC message appears every time, not regarding on my driving style. Usually i drive 5 10min and it appears. Maybe some sensor like the ABS one? Of course the DSC off button doesn't work, so as the downhill one. Does it means the car is in propulsion mode only now? Haven't checked the nylon gear but saw a video about changing it. A way to check it without dismounting the thing? I planned to do all the glow plugs + the module, but bit affraid of all the topics i see about snapping a plug in the hole. Don't know when the have been changed last time.. Where is the GP control module located? Found different diy, saying it's under the manifold, then in the relay box under the hood... How hard is the fuel pump / filter job? I guess i'll have to be ready to have diesel splashing my face EDIT: In addition to the glowplug codes i have 4521 and 4BB6 Last edited by grounch; 06-22-2021 at 05:05 PM. |
#20
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