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  #1  
Old 05-21-2020, 05:38 PM
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2005 X5 4.4 won't crank over sometimes

My 2005 X5 4.4 with 176,000 miles would occasionally not crank when key was in cranking position. When I would remove the key and try again it would work. Some times I would have to do this several times before it would crank. After one time of having to do this about 12 times before cranking, I replaced the ignition switch with a Febi brand. All was fine for a while, but then it happened again where I had to turn the key 2x before cranking, so I replaced the starter with a rebuilt unit from my local parts store. The new starter spins the motor much faster, and worked fine for a few weeks, but last night it wouldn't start after many attempts and had to have the car towed home. Tried it this morning and it started on second attempt, cranked fast like new.
Anyone have a similar issue? Any ideas? Thanks.
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Old 05-21-2020, 06:16 PM
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Do you have another key to try? (Possible immobiliser problem.)

With N62 it can also be the relays controlling convenient start.

https://www.newtis.info/tisv2/a/en/e...-relay/reoNfal
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Old 05-21-2020, 06:36 PM
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Very common symptom for failing ignition switch


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Old 05-21-2020, 06:47 PM
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Quote:
Originally Posted by andrewwynn View Post
Very common symptom for failing ignition switch
Didn't he already renew it?
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Old 05-21-2020, 06:55 PM
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new doesn't mean fixed. When you have symptoms that indicate a primary fault, you have to pretend you didn't fix it already. Countless times I've replaced something twice.
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Old 05-21-2020, 07:02 PM
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Indeed. I would question what the OP used for a replacement. If from the dealer then I would assume it would be good. If aftermarket, all bets are off.
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Old 05-21-2020, 07:10 PM
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He mentioned Febi which is probably OEM and good going but still doesn't mean it didn't break. The primary symptom of bad switch is the exact symptoms described above.
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Old 05-21-2020, 07:15 PM
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Quote:
Originally Posted by andrewwynn View Post
He mentioned Febi which is probably OEM and good going but still doesn't mean it didn't break. The primary symptom of bad switch is the exact symptoms described above.
I know but exactly same symptoms if key is randomly not recognised or the starter relay inside EWS module is failing.
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Old 05-21-2020, 07:18 PM
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Quote:
Originally Posted by Clavurion View Post
I know but exactly same symptoms if key is randomly not recognised or the starter relay inside EWS module is failing.
My guess would also be the EWS antenna or key itself. As mentioned try your other key.
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Old 05-21-2020, 08:00 PM
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Secondary failures that will produce these symptoms:

EWS antenna (key side or column)

Crank position sensor.

Do you any sense of power stoke?
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