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#1
03-13-2022, 10:54 AM
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SES protocol
I have been chasing a P code for a while. It’s a purge valve system issue. I did a little swapping of parts and I now have determined the culprit. I’m absolutely sure it’s the used Purge Valve I swapped in. I have a new purge valve to install. My question is will the SES light extinguish after I install a known good part? I can clear the code, but that also clears the monitors. Prefer the brain to realize the system is now correct. But not sure the computer is smart enough to realize I fixed the problem. What’s the consensus?
__________________
2003 4.6is X5 2003 525it 2003 E53 X5 Standard shift 
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#2
03-13-2022, 11:45 AM
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AFAIK it will realize and shut off the SES for you. Not sure of the drive cycle requirements, but it will self clear. The stored code will remain in the DME for future viewing.
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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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#3
03-13-2022, 12:43 PM
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SES will usually clear after a number of drive cycles if you don't want to reset drive monitors. Do you need to get emissions tested soon ?
Sent from my iPhone using Tapatalk Pro
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2011 E70 • N55 (me) 2012 E70 • N63 (wife)
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#5
03-13-2022, 02:43 PM
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SES protocol
Then clear codes to make it go away. The only reason to wait it out would be if you have an inspection due shortly.
It's also by far the quickest way to know if the part replacement fixed the problem.
__________________
2011 E70 • N55 (me) 2012 E70 • N63 (wife)
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#7
03-13-2022, 06:33 PM
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That's awesome!
Sent from my iPhone using Tapatalk Pro
__________________
2011 E70 • N55 (me) 2012 E70 • N63 (wife)
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#8
03-21-2022, 02:34 PM
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Quote:
The OBD II diagnostics should realize that the fault condition no longer exists, but there's no reason to not do the reset and allow the monitors to run until they come to ready. Either way, it should take a similar time. The SES will remain on until the computer figures out that you did something, or the monitors will run until they come to Ready. Either way, you cannot present the car at the smog station for its bi-annual check up.
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