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      09-09-2014, 02:56 PM   #221
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I have a 08 e92 m3 with 49K miles and I just had codes thrown at me "Engine malfunction" "Increased emissions" "DSC inactive" I left my car at my mechanic and he is saying that the DME is not communicating with the throttle body. After reading this thread I'm thinking its the throttle actuator. Has anyone experienced this problem?
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      09-09-2014, 07:11 PM   #222
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Originally Posted by Timbo3 View Post
I have a 08 e92 m3 with 49K miles and I just had codes thrown at me "Engine malfunction" "Increased emissions" "DSC inactive" I left my car at my mechanic and he is saying that the DME is not communicating with the throttle body. After reading this thread I'm thinking its the throttle actuator. Has anyone experienced this problem?
Sounds like it. You should have a message that says hill assist inactive or something along those lines too.
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      09-09-2014, 08:13 PM   #223
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Sounds like it. You should have a message that says hill assist inactive or something along those lines too.
Thank you! For the part do you have to order two or just one order comes with two of the actuator?
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      09-10-2014, 07:30 AM   #224
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Originally Posted by Timbo3 View Post
Thank you! For the part do you have to order two or just one order comes with two of the actuator?
1 order = 1 actuator. The mechanic will be able to read which bank is faulty and replace accordingly.

People say that if 1 fail, the other one is right behind it, but mine failed at 57k and now at 81k with no issues. Good luck!

Try to see if the dealership will work with you.
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      09-10-2014, 10:28 AM   #225
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W///: Thank you for posting this! Dealer quoted almost $3k to replace one actuator. With the help of this post and a few hours of work I got it done and saved $2,000!

Some additional tips for people doing this in the future:

1. The arm between the throttle actuator and the throttle rail just pops off with some careful force from a screw driver.

2. be VERY careful with the wire clips. On my 5 year old car they were very brittle. I broke at least 3 of them by accident. Nothing a few zip ties couldn't fix, but still annoying.

3. Labeling the wire connectors is a good idea. I didn't do this, and then found out the hard way that the connectors aren't unique (it is possible to plug the wrong wires together).
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      09-10-2014, 12:20 PM   #226
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Thanks to everyone that has submitted their inquires and orders for the throttle actuators
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      09-11-2014, 02:50 PM   #227
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Quote:
Originally Posted by W/// View Post
1 order = 1 actuator. The mechanic will be able to read which bank is faulty and replace accordingly.

People say that if 1 fail, the other one is right behind it, but mine failed at 57k and now at 81k with no issues. Good luck!

Try to see if the dealership will work with you.

Just got a call from my mechanic and he says both of the actuators need replacing.
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      09-11-2014, 02:57 PM   #228
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Quote:
Originally Posted by Timbo3 View Post
Just got a call from my mechanic and he says both of the actuators need replacing.
It's possible I guess, but I'm very surprised BOTH just went bad. Does he have the code to show you that both are bad?
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      09-11-2014, 03:48 PM   #229
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Quote:
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It's possible I guess, but I'm very surprised BOTH just went bad. Does he have the code to show you that both are bad?
he just said the part number is 13627838085 and that both the actuators are not communicating with the dme/ecu. he didnt show me the code
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      09-17-2014, 04:22 PM   #230
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Quote:
Originally Posted by Timbo3 View Post
I have a 08 e92 m3 with 49K miles and I just had codes thrown at me "Engine malfunction" "Increased emissions" "DSC inactive" I left my car at my mechanic and he is saying that the DME is not communicating with the throttle body. After reading this thread I'm thinking its the throttle actuator. Has anyone experienced this problem?
Yup throttles need to be replaced....

Mine was an 08' with 32K.....just got both TBA's replaced this week through dealership covered under 7/70K Cal emissions warranty
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      09-17-2014, 04:24 PM   #231
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Quote:
Originally Posted by Timbo3 View Post
Just got a call from my mechanic and he says both of the actuators need replacing.
Check with dealership to see if you are covered under 7/70K California Emissions Control Limited Warranty...mine was
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      09-17-2014, 04:26 PM   #232
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Quote:
Originally Posted by W/// View Post
It's possible I guess, but I'm very surprised BOTH just went bad. Does he have the code to show you that both are bad?
Just has mine done this week @ dealer under 7/70K - 08' 32K..both were bad and replaced
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      10-10-2014, 04:53 PM   #233
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Thank goodness for this DYI and folks who've crafted replacement gears. I am going to try replacing the gears to see how that goes. Believe it or not I am stuck at simply disconnecting some connectors. I've been working with bad lighting at night and have managed to get most of the connectors apart.

I don't want to break any wires or clips so I annoyed the pic and added arrows to the clips I am concerned with. Where should I press and which direction I should pull?


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Got it. The round end is just a cap to cover the wires. Just pull or pry with a screw driver. It will pop off. I think I have a better sense for how unfamiliar connectors come apart as well as what might be an end cover for wires (like an elbow cap).

Anyway i got bank one out.

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Last edited by L4ces; 07-15-2017 at 11:54 AM.. Reason: adding an image from googles cache that was blocked by photo bucket
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      10-12-2014, 01:31 PM   #234
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Quote:
Originally Posted by L4ces View Post
Thank goodness for this DYI and folks who've crafted replacement gears. I am going to try replacing the gears to see how that goes. Believe it or not I am stuck at simply disconnecting some connectors. I've been working with bad lighting at night and have managed to get most of the connectors apart.

I don't want to break any wires or clips so I annoyed the pic and added arrows to the clips I am concerned with. Where should I press and which direction I should pull?


Attachment 1102685


Got it. The round end is just a cap to cover the wires. Just pull or pry with a screw driver. It will pop off. I think I have a better sense for how unfamiliar connectors come apart as well as what might be an end cover for wires (like an elbow cap).

Anyway i got bank one out.

Attachment 1102764
Pry that tab a little a bit higher (you can see the "locking mechanism") and then pull it towards the rear if I'm not mistaken. Kind of hard to explain. let me know if that helps. Hopefully you already figured it out
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      10-12-2014, 06:39 PM   #235
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Quote:
Originally Posted by W/// View Post
Pry that tab a little a bit higher (you can see the "locking mechanism") and then pull it towards the rear if I'm not mistaken. Kind of hard to explain. let me know if that helps. Hopefully you already figured it out
Hey W/// I already figured it out. Thanks anyway. I replaced the gears in both actuators have errors in both.

Tried a new actuator... now I have one error (P161F). I will open it again and perhaps swap the circuit boards between the two faulty ones to see if the error code changes (doing that to see if the circuit board is a factor).

In short, the brainer fix is to purchase a new actuator.
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      10-12-2014, 08:12 PM   #236
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Quote:
Originally Posted by L4ces View Post
Hey W/// I already figured it out. Thanks anyway. I replaced the gears in both actuators have errors in both.

Tried a new actuator... now I have one error (P161F). I will open it again and perhaps swap the circuit boards between the two faulty ones to see if the error code changes (doing that to see if the circuit board is a factor).

In short, the brainer fix is to purchase a new actuator.
That's what I figured as well. Did you have really small shavings inside the unit? This would be really good to know what the issue is, whether gears or circuit board. As far as I know, there's no fix yet apart from just buying a new unit. But if we can fix the problematic ones for much cheaper, that'd be awesome. Definitely keep us updated
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      10-31-2014, 03:23 PM   #237
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Hey Guys,

Same problem on my car I suppose.
Problem started this summer with only 67.000 km on it. On my car it is usually resettable and used to occur less than once a month, but nowadays it's more like once every other week. Mine is a 2009 M-DCT by the way and when the car is in "limp mode" it shifts quite rough and at maximum speed, I get overtaken by trucks and granny's.
Time to visit the dealership next week, since I'm not the DIY-type-of-guy, not on my car at least.
I am very curious if BMW Netherlands is willing to compensate, because in my humble opinion, this is unacceptable for a premium product with this milage, also given the fact that it seems to be a known problem.

Any Dutch M3 owners on this forum who have similar experience on this matter?

Keep you posted.
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      10-31-2014, 03:27 PM   #238
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Some pic's
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      11-02-2014, 01:22 PM   #239
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Here are the codes I have pulled on iViNi-app. Anyone with same codes??
Codes:
002B21 - Throttle actuator control circuit bank 1 / predriver check throttle valve actuator
002B22 - Throttle actuator control circuit bank 2 review/misfire detection error summation/predriver check throttle valve actuator
002B57 - Mass air flow sensor
002B2D - Throttle initialization bank 2/ High-pressure fuel 2

I bought a new actuator but it looks like I need another.

I also have the DSC, increased emission, start assistance inactive errors
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      11-02-2014, 02:47 PM   #240
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I'm in the process of replacing one of the actuator.
Update......
When doing the pre-ignition. Throttle bank #2 clicks and moves but the #1 actuator does not so....I'm thinking #1 is bad.
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      11-02-2014, 09:07 PM   #241
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Just finished. I took a break in between to watch my Seahawks!
Replaced Bank 1 actuator. Started without limp mode. I cleared all the code errors. Warmed her up and no codes!!!

Thank you W/// !!!!!!
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      11-03-2014, 07:19 AM   #242
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Quote:
Originally Posted by Flea7 View Post
Just finished. I took a break in between to watch my Seahawks!
Replaced Bank 1 actuator. Started without limp mode. I cleared all the code errors. Warmed her up and no codes!!!

Thank you ///W !!!!!!
Glad it all worked out!
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