07-24-2020, 11:27 PM | #23 |
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I just had mine go. Bought a handheld scanner and it pulls these two codes even after clearing them:
135C11 Valvetronic servomotor position sensors: Signals implausible 135A08 Valvetronic,servomotor position sensors:signal implausible I hear the ticking/grinding noise when I unlock the car. My kids heard it today when we were emptying the trunk after we drove it so the valve tronic must run again shortly after the car is turned off as well as before. I have the extended warranty so I'll take it into the shop and update everyone on what they decided to do. |
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07-25-2020, 10:42 PM | #24 | |
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07-30-2020, 01:09 PM | #25 | |
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i had the valve cover gasket replaced a couple weeks ago so i am not sure if they maybe knocked it loose then but i did get saddled with the diagnostic bill as no parts were replaced |
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07-30-2020, 04:08 PM | #26 | |
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The design and placement of the sensor itself is completely stupid, it's a tiny plastic sensor that sits right on the head |
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12-20-2020, 07:22 PM | #27 | |
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My S55 is making the clicking noise when I unlock the doors. No codes. Should I go ahead and replace the valvetronic motor? Wait until it throws codes? Get an official diagnostic? The motor replacement looks pretty straightforward. Anyone DIY this? |
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01-15-2021, 02:22 PM | #29 |
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With the Covid situation my car has been sitting in the garage more and more. Now I often get 30 seconds of loud clicking when I unlock the doors... sounds like this issue :-(
I saw mention of running an ISTA/D diagnostic ... and I think I have that installed on a Windows laptop from a while ago (for resetting EDC sensors after coding dampers) Is the valvetronic diagnostics test something I can do safely in my home - or might it leave the car in a messed up state? I saw a comment that it might actually recalibrate and fix the problem ... is this possible/likely? Car is out of warranty now (had been expecting to upgrade to a G8x but that now seems unlikely!) so I would love to avoid a dealership just doing $3000 of work if it's potentially unnecessary. Any advice? |
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01-15-2021, 11:56 PM | #30 | |
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02-02-2021, 11:50 AM | #31 |
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Quick update: I eventually got around to firing up ISTA+. My car had no fault codes related to valvetronic, so I ran the simple 'Valvetronic limit stop reset' procedure.
Took about 2 seconds ...and now I apparently have no more loud clicking noises when unlocking the car! Also, this may just be confirmation bias, but I think the slow and idle are improved and the car feels just that little bit smoother. |
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02-02-2021, 06:05 PM | #32 | |
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08-26-2021, 06:09 AM | #33 |
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hello guys
here another s55 with same problem...after 3 weeks that the car was in garage, battery charger ok, now i have the issue of the valvetronic. didn't nkow about this issue i find this thread by searching the error that i see via ista. i will try the reset procedure and will update this thread. car is an late 2016 46.000km |
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09-21-2021, 11:30 AM | #34 | |
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I have ISTA+, just looking for some screenshots or step by step menu options to go through. Many thanks.
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09-21-2021, 01:35 PM | #35 |
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To the ones that are pulling codes, are you guys getting CEL lights and then reading those codes are are you guys just pulling codes without a CEL light on? I know certain things like the exhaust valve being disconnected can have codes pulled without a CEL light on, so was curious.
I've had the clicking noise when engine off and I unlock car or open door for 4 years now - but never had a CEL light. Usually happens when car sits longer during the colder months. |
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09-21-2021, 01:38 PM | #36 |
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Same here… just a clicking noise sometimes when car is not used for a while. No lights or any error codes.
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10-20-2021, 02:56 AM | #38 | |
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10-20-2021, 01:19 PM | #39 | |
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No CEL for me ever, engine idles beautifully and zero stutters or anything throughout any of the RPM range. Will report back whenever / IF it ever changes to a CEL. |
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10-20-2021, 01:32 PM | #40 | |
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engine eletronics -> valvetronic learn but, for me, didnt' work because if error still present the procedure dont starts need to be changed |
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10-20-2021, 05:18 PM | #41 |
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Now that the colder mornings are back, it is happening again. I will take it back to the dealer again and let them diagnose. I intentionally did this before my warranty expired to get it on record with them.
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11-11-2021, 09:04 PM | #42 |
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Heard this for the first time tonight as it's colder in NY. I was able to replicate it 100% of the time by unlocking my car. I was placing my ctek charger on the car and it was on for about 60 minutes, I was unable to replicate the sound after that. Cars been sitting for a while . Going to try to replicate it again by taking the tender off for a couple of days and try again.
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11-12-2021, 02:46 PM | #43 |
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My car is suffering same symptoms. Took it to the dealer under warranty "expires end of Nov" even tho they r familiar with the issue they Kept car for about 3 weeks gave me an X1 as a loaner vehicle and told me they can't replace it cuse car is tune and been messed with computer.
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11-12-2021, 07:15 PM | #44 |
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So I tested it again and left my car off the charger for 48 hours and it made the noise again.
I placed my car on the ctek charger and waited til it was charged and the noise stopped Guess my noise must be different as it's linked to the battery somehow |
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