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X5 E70 (2007 - 2013)
E70 BMW X5 produced between 2007 and 2013. Discuss the E70 X5 with other BMW owners here.

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  #51  
Old 07-17-2014, 08:42 AM
redwood78 redwood78 is offline
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Mein Auto: e70 lci
Quote:
Originally Posted by serge1 View Post
Sorry to hear it didn't fix the long crank. At the very least, you have eliminated one of common causes, at low cost.
yeah, i don't mind throwing parts at a problem when the parts are cheap and the labor is free. dealer parts price + dealer labor is a whole other thing.

in the meantime, i hear there is a software update that causes the fuel pump to prime longer when you open the door up. thus putting more fuel where it should be at start up and reducing crank time. i'm going to have the dealer check if it has the latest software version when it goes in for the vanos recall, which will hopefully be soon. i'm not holding my breath though, if i had a nickle for every time bmw told me "it just needs a software update," i'd be rich.
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  #52  
Old 07-17-2014, 08:51 AM
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serge1 serge1 is offline
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Pretty good success rate by replacing the relay, so you weren't throwing parts at it in classical meaning of that term.
Good luck with software update. Let us know how it goes
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  #53  
Old 08-10-2014, 01:21 PM
redwood78 redwood78 is offline
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Mein Auto: e70 lci
just reporting back that it turned out to be the hpfp. dealer replaced it and all seems well.
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  #54  
Old 01-29-2015, 10:15 AM
rh71 rh71 is offline
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Mein Auto: X5 3.0si
'08 3.0si @ 40k here - this morning it cranked but would not start. Having seen this thread before, I immediately wondered if it was the fuel pump relay. But on page 1 of this thread, I'm also reading about valve cover gasket causing a leak into the alternator, resulting in a drained battery. A couple weeks ago during my inspection, my indy shop told me the gasket was showing a slow leak but it wasn't vital to do it now and so I left it. Then I went on a road trip where after sitting overnight, it cranked and wouldn't start 1 time, but then started up upon the 2nd try - it was probably 20F. No problems since, including many cold days, until this morning - about 30F.

I tried at least 5 times and it would just crank and not start. I inspected the exterior of the alternator for oil residue and it looked dry. I pulled out the fuel pump relay and there were no scorch marks - it looked unremarkable. I plug that back in and gave it another try - no dice. Tow truck guy comes 30 mins later ready to give me a jump, but he tried it normally first - it started right up. And every try immediately after that was fine too and I gave it an errand run so hopefully it will last. He had explained that it's possible that I flooded the spark plugs during all those attempts prior and by then it had dried so it's starting again. *shrug* - even if that could happen, it doesn't explain the first failure.

Temps are still around 32F right now. Battery is new as of 1-2 years ago and rated for 900CCA at 0F. What is the likely cause of this? The oil leak, fuel pump relay, or the battery acting up? Could a faulty relay act intermittently like this?
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'08 X5 3.0si - Alpine White / Saddle Brown interior
Specs: Sport, Premium, Tech, Comfort Access, Aero Kit, Style 433 staggered 20s on Conti DWS
Mods: Carbon 35 tint, LED angel eyes, GP Thunder 7500k fogs, H&R 20mm/25mm spacers, clear reflectors, gunsmoke-tinted taillights

-> more pics at Flickr <-

Last edited by rh71; 01-29-2015 at 10:22 AM.
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  #55  
Old 02-04-2015, 11:48 AM
MBrody MBrody is offline
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Join Date: Feb 2015
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Mein Auto: X5 E70 4.8i 2007
Hi @all,

my name is Markus and I live in Germany, so first of all I want to apologize for my bad English.

My truck is a 4.8 X5 E70 from 2007 and I am/was in that "long crank but will not start" issue for some weeks now. Unfortunately, I found this thread at

bimmerfest.com a few days too late... My indy mechanic already replaced the HPFP, he said that it did not work correctly. After replacement of the HPFP

everything was fine for a while... I went skiing with my kids last weekend, car was parked at ambient temps of about 25° F - the car started at the

first attempt. But the replacement of the HPFP didnīt fix the issue ... one day later I had the same problem again - car was parked in my garage over

night, ambient temps about 40°F - crank, engine started at third attempt. I asked my mechanic to order the green fuel pump relay - he said he could not

imagine that this is the root cause...But I wanted to give it a shot. We replaced the relay and ... it works! Engine is starting without problems since

then!

Ok, I (want to) believe that my mechanic was right and the HPFP did have a problem and I had a "double feature" problem - fuel pump AND fuel pump relay,

but I am not sure any more. Maybe I should have started with replacing the relay - but as I wrote before - unfortunately I found Masoes hint a few days

too late.

@Masoe - THANK YOU very much for your hint!!! Especially with the setup 4.8 X5 E70 2007 pre-LCI it seems that you are completely lost, especially here

in Germany - several garages/mechanics, even "specialists" for our Beemers I called told me that they didnīt hear about this problem before. The only

suggestion was to keep the car for a few days and try to start it again and again (and wrecking the starter and/or the battery by doing that..)

The "mean" thing with this issue is, that no error message is saved at all!

With this experience I can only recommend to listen to Masoe and replace the fuel pump relay before any other part of the car is replaced!

@rh71 - you can see no scorch marks at the outside of the relay - I guess you can only see something when you open that little cube... And yes - with the experience I made myself that faulty relay intermittently acts correctly - engine starts as if there was no problem at all but then one day or so later it doesnīt act at all and the starter cranks... and cranks...


Greets from Germany
Markus
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  #56  
Old 02-04-2015, 06:54 PM
Masoe Masoe is offline
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@Markus, Thank You for the shout out. I know how frustrating and costly these vehicles can be when something goes wrong. I too have gotten a lot of great information from this site and have saved money (I just need to thank individual members like you did.) I’m glad you finally got the issue sorted out!

Just FYI, I recently downloaded the Wheel Alignment information that Ard and Pax5 posted and will be taking that information to an Indy soon before I wreck my tires.

Let’s keep the info sharing going and continue to save everyone some $$.
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2012 750Li, Carbon Black Metallic/Oyster&Black, M Sport (Current)
2008 X5 4.8 (Sport), Platinum Bronze Metallic/Tobacco&Black (Current)
2006 750i, Sapphire Black Metallic/Black
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  #57  
Old 02-07-2015, 05:27 AM
rh71 rh71 is offline
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I was able to remove the relay and no scorch marks on the contacts either. It hasn't happened again but I think I will order the $17 part anyway. I'll report if it still happens with a new one.

Edit>> and of course it fails on me today. 32F. Gonna get the part tomorrow.
__________________
'08 X5 3.0si - Alpine White / Saddle Brown interior
Specs: Sport, Premium, Tech, Comfort Access, Aero Kit, Style 433 staggered 20s on Conti DWS
Mods: Carbon 35 tint, LED angel eyes, GP Thunder 7500k fogs, H&R 20mm/25mm spacers, clear reflectors, gunsmoke-tinted taillights

-> more pics at Flickr <-

Last edited by rh71; 02-07-2015 at 11:22 AM.
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  #58  
Old 02-09-2015, 01:53 PM
rh71 rh71 is offline
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Mein Auto: X5 3.0si
While getting the relay, the parts guy said another common culprit is the fuel pump connector. He mentioned it can be burnt and since it's a bit troublesome to get to under the seat, wouldn't something like that cause it to fail to start EVERY time instead of randomly?

The new relay is in and it started up at 25F, but we'll have to see long term.
__________________
'08 X5 3.0si - Alpine White / Saddle Brown interior
Specs: Sport, Premium, Tech, Comfort Access, Aero Kit, Style 433 staggered 20s on Conti DWS
Mods: Carbon 35 tint, LED angel eyes, GP Thunder 7500k fogs, H&R 20mm/25mm spacers, clear reflectors, gunsmoke-tinted taillights

-> more pics at Flickr <-

Last edited by rh71; 02-09-2015 at 02:11 PM.
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