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  #9711  
Old 10-19-2018, 01:28 PM
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Went to drive it @ 6:45AM for an MRI appt... and was greeted to battery warning indicator.



Will troubleshoot later... have to go over to my parents to hang a door for them.
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  #9712  
Old 10-19-2018, 03:58 PM
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Battery sign while car is running would be alternator on it's way out no?


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  #9713  
Old 10-19-2018, 04:49 PM
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Might be. You can check voltage with engine running by unlocking the cluster or with multimeter. Voltage should be approximately 13.8 to 14.2V. Essential tools for DIYer should include good multimeter.
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  #9714  
Old 10-19-2018, 09:18 PM
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Finally installed the door handle carrier on driverís side rear door.
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  #9715  
Old 10-20-2018, 01:21 PM
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Quote:
Originally Posted by bcredliner View Post
Might be. You can check voltage with engine running by unlocking the cluster or with multimeter. Voltage should be approximately 13.8 to 14.2V. Essential tools for DIYer should include good multimeter.
Agreed on the multimeter. I can't live without mine.

It's the alternator. Getting 14.3v - 14.4v with engine running. But every now and then it dips down to 13v ish so I'm guessing the voltage regulator is going out. Carly also pulled a code for engine generator so I'm guessing it logged a code for the alternator too.

Also got codes for steering angle/yaw sensors but going to do those after alternator in case those were voltage dip/spike errors.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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  #9716  
Old 10-20-2018, 07:58 PM
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Is that at idle? I checked mine today and at idle it was steady 13.8v


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  #9717  
Old 10-20-2018, 08:07 PM
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Quote:
Originally Posted by mr_robot View Post
Is that at idle? I checked mine today and at idle it was steady 13.8v


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13.8 is ok
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  #9718  
Old 10-20-2018, 08:09 PM
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What did I do to my E53? Loaded up the family, drove the 4.8is all over, Dinan exhaust and intake singing, pure pleasure. No issues, smooth, and pulls strong. It is next in line for an oil change. Been a long time since any unscheduled service. Very happy with her.
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  #9719  
Old 10-20-2018, 08:58 PM
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Quote:
Originally Posted by mr_robot View Post
Is that at idle? I checked mine today and at idle it was steady 13.8v

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Engine running at idle should be a stead 14.4v ish +/- a couple tenths of a volt. Mine was dipping down to ~13.2v at some points. 13.8v is not going to hurt anything... but it should be higher than that. Did you have any accessories going? I test mine with AC off, lights off, etc. Radio I leave on usually. The computers start to get unhappy in the low 13's and really get pissed in the 12's.
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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)


2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)
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  #9720  
Old 10-21-2018, 07:23 PM
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Quote:
Originally Posted by Fifty150hs View Post
13.8 is ok
Check with all current drawing stuff shut off.
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Last edited by bcredliner; 10-21-2018 at 07:56 PM.
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