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#1
09-29-2017, 01:44 PM
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One other consideration; from a recent thread here; somebody with intermittent start problems; it worked out to be a faulty key; the immobilization circuitry probably had a bad solder joint so sometimes it was working sometimes it wasn't. Now i don't think the car will crank with the immobilization circuit non operational but i would definitely try your other key, especially right after you get a non-start situation. if you can start up first try with the other key, good chance the key's immobilization circuit is not talking to the car.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) 
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#2
10-02-2017, 08:44 AM
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I agree with wpoll and bcredliner that the ignition switch needs to be investigated.
All sorts of weird electrical problems can occur with a failing switch. Check out this YouTube video for an example of an amazing panoply of issues resulting from a bad ignition switch. The above shows that replacement of the switch is pretty easy. Another video link is here. And if you don't want to spend the money on the switch (or if you want to do an "autopsy" on the old switch to look for failure points), be sure to check out this video on refurbishing the old switch. And if it turns out it is the ignition switch, (with apologies to upallnight) you owe wpoll a pint! Good luck.
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Stephen 2010 e70 35d- now driven by son #2 2005 e53 3.0 - now driven by son #1 2021 G05 45e PHEV - now driven by me 2008 ML320 CDI - driven by wife Last edited by sgrice; 10-07-2017 at 07:56 AM.
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#3
10-17-2017, 09:16 AM
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Quote:
Looks like you owe Wpoll a pint.
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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#5
10-09-2017, 02:21 AM
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Ok, back home
Tried the X5 this morning after it was left sitting for 12 days Check Battery Voltage - 11.7v Turn key, Dash lights up, Vehicle cranks slower then normal (12days sitting), but starts fine. Reverse vehicle out into driveway, test Charging current (14.1v at Battery Terminals) Test every fuse in rear, right side compartment (all good) Drive vehicle back into garage, turn off. Try to restart, no dash lights, No start. The Mrs also noticed the Reverse Sensors were not working either (something i hadn't noticed, for what its worth) Wait 30minutes X5 starts again Turned off Tried to start again, dash lights up, now it cranks over fast but No Starting. Does this for 2 attempts Remove key completely, re insert, turn, dash lights up, it starts Turn off Now won't even restart or crank over. SWAP BATTERY for a another 2 Non Starts 3rd try it starts..... Every time it starts, it still has the same warning lights on the dash. Refit the first Battery, now it will not start after 8 attempts, leaving the vehicle for 1 hour etc. Last edited by Salty_Dog; 10-09-2017 at 07:30 AM.
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#6
10-09-2017, 07:01 AM
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Just read the entire thread and I don't think it was what I was suggesting so editing my comment out
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Just BMW's - All cars and trucks was two pages long 1994 318is 1997 528i 2000 323i 2001 X5 3.0 auto 2005 X5 3.0 auto 2011 535xi auto 2013 X5 xdrive35 Turbo More are at my website Aftermarket E53 Radio Install
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#7
10-09-2017, 08:01 AM
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To repeat - my next step would be the ignition switch.
Did you look at the video links in my earlier post? Just for fun see if your passenger or driver side visor lights have any effect on a no start condition. Also there is at least one other youtube video showing testing of the ignition switch. Good luck.
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Stephen 2010 e70 35d- now driven by son #2 2005 e53 3.0 - now driven by son #1 2021 G05 45e PHEV - now driven by me 2008 ML320 CDI - driven by wife
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#8
10-09-2017, 08:57 AM
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Sounds like you need to get the EWS aligned with your DME or DDE.
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2006 Infiniti G35 2001 BMW 3.0I E53 X5 Build date 08/2000 SOLD Lotus Europa 1970 Destroyed by fire Lotus Europa 1970 S2 Renault Powered Lotus Type 52 1970 Twincam Webers Powered PORSCHE 911 Targa 1982 The Garage Queen Audi Avant donated to Kars for Kids BMW 525IT Sold Audi 4000CS Quattro Sold Jensen Healey Lotus Powered Sold Opel 1900 Sold Triumph Spitfire 1971 Sold Triumph Spitfire 1968 Sold Plymouth "Cuda" 340 Six pack SOLD
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#9
10-12-2017, 07:29 PM
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Yes, sorry to those that made suggestions
I had very limited time with the Vehicle last time around. Agreed..... Alternator Ignition Switch Mech or a Check Sum error in ECU seems to be the likely culprits Letting some so called Euro Car Expert look at it while i'm not there. He came Day 1 and his OBD2 Scanner wouldn't even connect to the Vehicle because he could not get any ignition he said.... oh dear 
Last edited by Salty_Dog; 10-12-2017 at 07:49 PM.
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