09-07-2024, 12:03 PM | #1 |
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Vanos Solenoid Valve error code
Hello everyone.
I just diagnosed my 2018 540i and i got two codes regarding the Vanos Solenoid Valve, Exhaust (shown in picture). The car keeps jerking in low rpm. Do i need to replace the Vanos Actuator or somethint else ? Anyone has made this experience ? |
09-07-2024, 01:56 PM | #3 |
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Do you have a part number by any chance of the Vanos Solenoid ? I can’t really find it as Vanos Solenoid, there is some parts related to Vanos but don’t really know which one should be the Solenoid.
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09-07-2024, 03:49 PM | #4 |
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Did you try a supplier like getbmwparts.com? I just did a search for my car and had several hits on "VANOS solenoid." You can try "Variable Valve Timing Solenoid" or "VVT Solenoid" too. Unfortunately there are many parts related to VANOS so I'd have to defer to more of an expert to identify the specific part that you need.
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09-07-2024, 05:58 PM | #5 |
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There is an intake and an exhaust solenoid. likely the same part number. you can remove both, clean them and reinstall in opposite positions. then see if it comes back as intake or exhaust, if at all.
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09-11-2024, 08:44 AM | #6 |
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11367614288 is the part number for the vanos solenoids for the 540i
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09-28-2024, 03:35 PM | #7 |
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Update on my issue:
I just replaced the exhaust VANOS, deleted the error and got the car on the street, but i still have the same problem the car still jerks at low rpm and I realized it also does in stationary. I reved the car to 1k rpm and every 3-4 seconds somehow the rpm decreases for 100-300 rpm lower, i did rev and hold it at 2.5k rpm but it doesn’t move it stays stable at 2500rpm. I don’t know if this can be related to the problem i have but the consumption is also crazy with 15L/100km or around 15.4 mpg. Now i’m a little bit lost because the diagnose doesn’t show any error code. |
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11-20-2024, 03:21 PM | #10 |
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12-15-2024, 03:40 PM | #11 |
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Hi,
I have a shudder issue before complete stop instant, as in daily traffic, or just before releasing the brake to go. It happens when the car is warmed up. It does not shudder with cold engine. To my suspicion; it started after the vanos actuators were replaced. Before that, I was feeling jerky or wavy acceleration. The replacement solved it but I feel that the engine became more rough and this annoying shudder began. Is there any part other than this so called “actuator”? Is it the same thing with vanos “solenoid”? |
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12-16-2024, 03:09 PM | #12 |
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I think the "actuator" and solenoid are the same thing. Typically these cause the car to throw error codes.
I suppose you could have gotten a defective one, but I would expect vanos codes to be present. Just a WAG, but have you considered/inspected the Giubo (flex disc) on the driveshaft? These appear to have a relatively short finite life. Basically a consumable. The prior "jerky" acceleration might have finished it off.
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12-16-2024, 03:34 PM | #13 | |
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Hi,
Actually I observed some minor cracks on rear flex disc but the mechanic said it would not cause any problem. Can the flex disc cause vibration at stop in gear? I was thinking that it would cause problem during moving. If it is possible to do so I will have checked it. Quote:
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12-16-2024, 07:03 PM | #14 |
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I would not think it would cause vibration in gear with brakes applied. Vibration as described could be a rough running motor (at lower idle in gear) , faulty engine mount or transmission mount perhaps. Just guessing. Putting it on a drive-on lift to recreate the symptoms while someone checks underneath might help.
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12-17-2024, 12:35 AM | #15 |
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An interesting observation;
I select eco-pro and disable start/stop and the engine always keeps running. The vibration goes off in eco-pro mode. That is; when I press brake pedal and the car completely stops, it first vibrates first 2-3 secs and suddenly vibration is cut off. But it continuously vibrates in comfort and sport mode. So what does the car do or not do in eco-pro when the car is already stopped? I know that eco-pro disengages engine and transmission during coasting but for this to happen both brake and gas pedal have to be released. But I am already stopped in the lights so I press brake and the car is in gear. What is not enabled or disabled at this situation? Any ideas? |
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12-18-2024, 04:28 PM | #16 |
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Good question. Not really sure. But, it may be reducing engine load by reducing A/C or other electrical loads. This might bring the idle up a little bit and reduce vibration. Just a guess.
Does the same reduction of vibration occur if you are sitting in gear with foot on brake and you shut of A/C or even heat?
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12-18-2024, 04:37 PM | #17 |
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I’ve set an appointment with a BMW specialist for this Friday and they will do a thorough check and see what the problem might be.
He told me it can be the Vanos Central Valve, it can be also that the timing chain jumped. I will keep you updated. |
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12-18-2024, 08:59 PM | #18 | |
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Quote:
I finally found some info about Eco Pro mode about what it tunes on the engine. It is said that the wastegate is kept 100% open so all exhaust gas is thrown away from the engine and no exhaust is fed to turbo in eco pro mode. This reduces boost, so the load on the engine is less. This explains the sluggish response of eco pro mode. In comfort or sport mode however; the wastegate is not 100% open and depending on use, a ratio of the exhaust gas is directed to turbo, so boost is adjusted. This explains the engine setting in eco pro due to fully open wastegate but I expect to see this effect during movement. Does it also explain the situation at stop, full on brake and no press on gas pedal? I would expect the wastegate also fully open in sport or comfort mode when the car is stationary as I don’t demand power from the car, no throttle. But as I select sport/comfort the vibration begins; so maybe the wastegate is still adjusted during stop. |
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12-18-2024, 09:08 PM | #19 | |
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Do you also feel vibration when stopped at traffic lights? The car is in gear, drive mode, and you are on brake? Or do you feel as if the car is gonna stall when slowing down to stop, such as in daily traffic? |
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12-20-2024, 04:26 AM | #20 | |
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you replaced entire exhaust vanos unit or just solenoid?
Quote:
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12-20-2024, 10:36 AM | #21 |
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Yes it also has from time to time a rough idle and when i’m fully stopped at lights or in traffic.
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12-20-2024, 10:41 AM | #22 |
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