[The1EyedPigF97]

As title suggests, any one here had issues with their vanos solenoid actuators or valves?

So from research the B58TU and the S58 share the same vanos setup. I started to have rough idle, surging, poor fuel economy and loss of power.

Then car went into limp mod and got the fault codes for exhaust vanos. After hours of research I discovered it’s apparently not so uncommon for the vanos solenoid actuators fail randomly.

Ordered 2 new solenoid actuators, when installing I pressed on the valves and the spring on the exhaust solenoid valve is much softer than inlet side. I replaced the solenoid actuators. All good on inlet, problem is still there and exhaust request vs actual for the vanos is almost 25 degrees out during the data logs.

I have new valves on order and will replace both inlet and exhaust.

My reason for the post is to see if any one here has had similar issues?

Also any one have a lead or clue if the cam timing tool/locking tool fits from the B58TU (they look the same on all the pictures) or any one have a lead where I can order the tool from?

Any feed back is appreciated, if wanted I can post the full DIY of the work.

[suby01]

Is your car stock?

[freshxdough]

You're looking to replace the actual VANOS units on your engine? I do hope you realize (if I'm not mistaken) that you must remove the engine to perform this as the VANOS units are at the very back of the engine next to the firewall. Removing the solenoids alone is a bit tricky in the tight space.

You're going to need several special tools, including crank locking tool and cam tools. Not sure if the B58TU tool is the exact tool for S58 as well.

[The1EyedPigF97]

Originally Posted by suby01

Is your car stock?

Car is not stock.

Femto unlock
Catless downpipes
Filters
E30 custom tune.

Issue happened while working on the tune. But it’s not tune related. I reported issues to bmw before starting to modify. They checked out the car said all was fine. It’s a progressive failure from all the info I can find, also makes sense given how symptoms have progressed

[The1EyedPigF97]

Originally Posted by freshxdough

You're looking to replace the actual VANOS units on your engine? I do hope you realize (if I'm not mistaken) that you must remove the engine to perform this as the VANOS units are at the very back of the engine next to the firewall. Removing the solenoids alone is a bit tricky in the tight space.

You're going to need several special tools, including crank locking tool and cam tools. Not sure if the B58TU tool is the exact tool for S58 as well.

Got all the part numbers for the special tools (parts guy at bmw is a proper gent) also got the exact workshop manual from bmw directly (parts guy again).

Engine does not need to come out. Even in the official workshop manual job is performed with engine in. Only thing I am struggling with, is finding out if the B58TU cam timing tool works on the S58. I will be going back to the parts guy to pull diagram on a B58TU and see if part number matches on the tool.

Will post an update once I know.

[jturboawd]

oh so much fun.... I have all the tool sets from the S55/N55. Its actually not hard on those platforms. Also from my experience there is a lot of overlaps between the engine types, so when you get good at working on one, you can carry over the experience. Hopefully the 58 is similar in the same way.

Good luck and thank you for sharing!

[The1EyedPigF97]

Originally Posted by jturboawd

oh so much fun.... I have all the tool sets from the S55/N55. Its actually not hard on those platforms. Also from my experience there is a lot of overlaps between the engine types, so when you get good at working on one, you can carry over the experience. Hopefully the 58 is similar in the same way.

Good luck and thank you for sharing!

After checking all the manuals it seems like b48/58 tools work and carry over.

Some modification is required, it’s not a very hard job. Dealer gave me a very good price on labour for replacing the central valves so just going to send it in.

Will update if it fixes the issue.

[The1EyedPigF97]

Update to this saga.

Car has been at the dealership for over a week now. The gave quote and promise of less than 2 days.

Car drove in fine, just some issues with exhaust vanos. Well after a week of waiting, I receive a notification in the bmw app of a drivetrain malfunction.

I pop down to the deal to see what’s up. After they took everything apart changed the vanos solenoid valve bodies, put it back together. The car is having all fuel system related problems. Mostly injector failure cylinder 1 and 2.

Service adviser is not available and I’m in the dark. Waiting for Monday now to see what the deal is and if they have the cheek to tell me I need to pay for replacement injectors.

Sad to say my first true M car experience has so far been a horrible one.

I will post again on Monday. Once I can get answers on what’s going on.

[Tricky401]

Originally Posted by The1EyedPigF97

Sad to say my first true M car experience has so far been a horrible one.

I think Your lucky that bmw are even looking into it from a warranty point of view. If the car was left alone I doubt this issue would have occurred but obviously there’s no fun in that and we always want more

Just think the above comment is abit harsh as a general comment

Also if the issue was there before the modifications started, not sure I would have carried on. Maybe a second opinion could have been the best route

[The1EyedPigF97]

Originally Posted by Tricky401

I think Your lucky that bmw are even looking into it from a warranty point of view. If the car was left alone I doubt this issue would have occurred but obviously there’s no fun in that and we always want more

Just think the above comment is abit harsh as a general comment

Also if the issue was there before the modifications started, not sure I would have carried on. Maybe a second opinion could have been the best route

They not looking into it. Basically I sent the car in for a reported random misfire 3 months before starting the mods. After a week of them checking the car, they reported back all fine.

After the mods, during tuning I went for a drive out to my villa and it went into limp mode for vanos failure exhaust cam lock out. Fault codes were cleared and vanos solenoid actuators were replaced.

Car was still down on power and having partial throttle hesitation. Checked data logs and all was good except for exhaust vanos request vs actual. There was about 15-25 degree deviation.

Parts ordered and sent car into bmw for replacement. Car never showed a single misfire fault or injector fault code before going in for the vanos solenoid valve body replacement now. (I have ISTA) I rechecked for any stored codes the night before sending it to them.

Maybe a bit harsh, I love the car. I will not change from it, I’m not gonna sell after all is fixed as I want to push it more.

Just not a pleasant first experience with an Mcar. Basically car had zero issues besides the exhaust vanos missing request by more than 20 degrees average.

It’s the first s58 the dealership in my country is working on more than just basic service. So for the car to drive in 100% fine (besides exhaust vanos) them changing it all and on first start up start throwing errors for multiple misfire and injectors… it’s the tech that has made a mistake somewhere during the vanos replacement.

I will get an update from the dealer on Monday.

Ps. I would never modify any car if there was an issue that has not been 100% fixed before modifying.

[spta97]

Unfortunately the quality of service from many dealers is diminishing the experience. This is my second M car and I love it (and mostly problem free).

The issue is that most dealer default to "not able to replicate" or "normal for an M car". They lack the ability to truly diagnose the root cause of an issue.

Like anything mechanical, stuff can break, but the lack of quality service departments is a conscious choice by BMW - and most manufactures/dealerships unfortunately.

[The1EyedPigF97]

Originally Posted by spta97

Unfortunately the quality of service from many dealers is diminishing the experience. This is my second M car and I love it (and mostly problem free).

The issue is that most dealer default to "not able to replicate" or "normal for an M car". They lack the ability to truly diagnose the root cause of an issue.

Like anything mechanical, stuff can break, but the lack of quality service departments is a conscious choice by BMW - and most manufactures/dealerships unfortunately.

Yeah its quite disappointing to be honest.

overall the service quality is good at this dealer I use. Just seems like the technicians are not the best on the workshop side.

Tomorrow I will be waiting for the call that injectors need replacing even though its on them as all was good before the car went it. I will push to have it covered by them but i know warranty no longer exists.

[The1EyedPigF97]

Update to the whole situation.

Injector 1 and 2 required replacing due to tech over tightening and injectors failed.

I received the car back today with some interesting news to all. BMW can not detect the femto unlock... my car is not flagged in the system and still under warranty, that is the reason for the injector cost covered by bmw.

I have ISTA myself and scanned, it can not detect DME tuning if you are on the femto unlock. They knew the car was modified and i told them.

On a side note, vanos valve bodies replaced, new solenoid actuators replaced. Test drove the car, still has a slight hesitation. custom tune will need to be adjusted. I am still seeing large deviation on the request vs actual for the exhaust vanos cam...

I guess the saga continues to figure out if its software related or if the vanos gear needs replacement as well.

Will revive this thread after more testing.

[YolkyPalky]

I mean, you do all this tuning and engine mods, have issues, then try to have it serviced at what I can only assume is a low volume dealer, perhaps inexperienced technicians in Bulgaria, tbh not surprised at arc of this saga.

[The1EyedPigF97]

Originally Posted by YolkyPalky

I mean, you do all this tuning and engine mods, have issues, then try to have it serviced at what I can only assume is a low volume dealer, perhaps inexperienced technicians in Bulgaria, tbh not surprised at arc of this saga.

It is not a low volume dealer... dont make such assumptions.

It is actually the main dealer for all M cars sold in the capital. They resolved it in the end. It was a mistake by the technicians. Mistakes happen sadly, their main fault was keeping me in the dark.

I had a sit down with the manager when collecting the car today and discussed everything. Will something change due to that probably not. But prior to this myself and many friends have not had issues with said dealer.

[Mike02z]

You are extremely lucky the dealer did this work. Even if they can’t see the DME was tuned they surely saw the catless downpipes. Glad you got it sorted but suspect if you keep going back they will find that the car has been modified.

[The1EyedPigF97]

Originally Posted by Mike02z

You are extremely lucky the dealer did this work. Even if they can’t see the DME was tuned they surely saw the catless downpipes. Glad you got it sorted but suspect if you keep going back they will find that the car has been modified.

Well they know its modified without looking. I told them it is in order for them to not software update the car.

They will eventually detect it when some guy blows and engine and tries to warranty it. I was not sending the car in to try get the work done under warranty.

They ended up replacing injectors under warranty without any argument or fight. Dealer does not really care from what I see as they sent the claim to germany and it was approved.

I will use the dealer for Major work and services. I am ok with warranty being voided. Gotta pay to play, im just not willing to pay for parts damaged by tech error.

Car is idling better, random missfire is gone, overall ending is running more smooth. I am still dealing with the surging issue in low rpm under load as the car comes into boost. I am going to look at plugs again and possibly replace all coils as well.

beyond that im pretty much stuck if its not fixed.

[FSociety]

Originally Posted by The1EyedPigF97

Well they know its modified without looking. I told them it is in order for them to not software update the car.

They will eventually detect it when some guy blows and engine and tries to warranty it. I was not sending the car in to try get the work done under warranty.

They ended up replacing injectors under warranty without any argument or fight. Dealer does not really care from what I see as they sent the claim to germany and it was approved.

I will use the dealer for Major work and services. I am ok with warranty being voided. Gotta pay to play, im just not willing to pay for parts damaged by tech error.

Car is idling better, random missfire is gone, overall ending is running more smooth. I am still dealing with the surging issue in low rpm under load as the car comes into boost. I am going to look at plugs again and possibly replace all coils as well.

beyond that im pretty much stuck if its not fixed.

Let me know if it's time to change tuner/tune
I suggest let's start with Bootmod3 OTS E30

[The1EyedPigF97]

Originally Posted by FSociety

Let me know if it's time to change tuner/tune
I suggest let's start with Bootmod3 OTS E30

well to provide an update on the whole situation.

I replaced the oil pressure control solenoid and pressure sensor.

Tuner adjusted the oil pressure mid range and its 100% now.

Last issue we are working through is the throttle tables. My software version is different and does not "react the same" to the other versions.

when holding 30-40% throttle under load around 4000rpm the car surges. Basically it starts requesting 100% throttle then cuts back and bucks, does this repeatedly. But issue is found and its all software related.

I am unlocked for MHD so Bootmod3 is not an option but thanks for the offer.
Currently working on the custom E50 map... with DA over 1000m on the base map, car does 6.5 100-200 and 10.7 in the 1/4.

Regards,

[Dawgz]

Originally Posted by The1EyedPigF97

Update to the whole situation.

Injector 1 and 2 required replacing due to tech over tightening and injectors failed.

I received the car back today with some interesting news to all. BMW can not detect the femto unlock... my car is not flagged in the system and still under warranty, that is the reason for the injector cost covered by bmw.

I have ISTA myself and scanned, it can not detect DME tuning if you are on the femto unlock. They knew the car was modified and i told them.

On a side note, vanos valve bodies replaced, new solenoid actuators replaced. Test drove the car, still has a slight hesitation. custom tune will need to be adjusted. I am still seeing large deviation on the request vs actual for the exhaust vanos cam...

I guess the saga continues to figure out if its software related or if the vanos gear needs replacement as well.

Will revive this thread after more testing.

What do you mean by Femto unlock?

[The1EyedPigF97]

Originally Posted by Dawgz

What do you mean by Femto unlock?

for the post june 2020 cars the DME is completely locked. Femtoevo has managed to unlock the calibration area allowing you to flash via OBD.

So its not a full flash but just the calibration area, works really well, you can flash via MHD, Bootmod3, MGflasher etc. DME needs to be sent out to them for the unlock specifically for the software you want to flash with.

BMW/ISTA can not detect it on plug in or scan for DME tuning. But if they really dig they will see it, so when someone tries to warranty a major failure then BMW will probably catch it. For now they dont see it.

[FSociety]

Originally Posted by The1EyedPigF97

well to provide an update on the whole situation.

I replaced the oil pressure control solenoid and pressure sensor.

Tuner adjusted the oil pressure mid range and its 100% now.

Last issue we are working through is the throttle tables. My software version is different and does not "react the same" to the other versions.

when holding 30-40% throttle under load around 4000rpm the car surges. Basically it starts requesting 100% throttle then cuts back and bucks, does this repeatedly. But issue is found and its all software related.

I am unlocked for MHD so Bootmod3 is not an option but thanks for the offer.
Currently working on the custom E50 map... with DA over 1000m on the base map, car does 6.5 100-200 and 10.7 in the 1/4.

Regards,

Don't see why Bootmod3 won't work as it's the same protocol to flash

To give you a comparison jairomvp182 2022 X3M all done by @OrlandoAUTOwerks is running 10.6@130mph in the 1/4 mile full weight + 330lbs driver - stock hardware 0 mods trying to see whats the most it can do in 80-95F weather still dialing in the car on Bootmod3

Dynojet results so far I saw from speaking to him
Stock 93oct 470whp/466wtq in 80F Dyno
BM3 STG1 E30 576whp/535wtq in 95F Dyno
Custom E40 640whp/583wtq in 95F Dyno
More results coming

Originally Posted by Dawgz

What do you mean by Femto unlock?

Overseas unlocker for the new security in 2021+ BMWs