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      04-07-2021, 05:13 PM   #1
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Active Cruise control is always something I wanted to have as it's such a useful feature, not only for long trips but for city driving. It allows you to set a maximum speed and it will accelerate to that speed keeping a set distance to the vehicle in front of you. This distance can be controlled with the steering wheel buttons. It will also brake completely to a stop and works in turns and when switching lanes as well. Basically, all you have to do is steer - or stop the car at traffic control devices only if you are the first car.

Unfortunately ACC was never offered on any of the M models until the G series M cars starting in MY2019. This almost caused me to purchase an X5 50i, but I was much more attracted to the potential of the S63 engine having enjoyed 750HP on our two previous F10 M5s.

TJA builds upon ACC and maintains lane keeping assistance by keeping the vehicle in its lane and turning the steering wheel while following the vehicle in front. TJA works very well in traffic and with clearly marked lanes. If there isn't a car to follow or the lanes are not clearly marked, it has a tendency to drift but will immediately alert the driver upon system deactivation.

For us, the main goal was to achieve ACC functionality on an M model vehicle, and TJA is certainly an added bonus. Non M vehicles can be optioned with this from the factory.

The installation involved mounting the front range radar sensor and the associated wiring to connect it to the proper vehicle communication systems. After that the car underwent custom programming and calibration of the driver assistance systems. The end result is marvelous - ACC and TJA is an excellent addition to any M car!

Please find below pictures during the install and a couple videos as well. We will be offering a retrofit kit for those interested.

Big shoutout to Mike Fuentes at Santa Monica BMW for assisting us with the calibration (BMW factory special tools with laser, guide, rail, and mirror are required for 100% perfect calibration). Also big shoutout to Bruno, our master M technician for his impeccable job at installing the sensor and routing the wiring along all of the factory harnesses.

We finished the retrofit off by fitting the car with a factory performance steering wheel and some dry carbon paddles. We also fitted a device which emulates hand presence on the steering wheel. Other than this device, all other parts are 100% factory equipment and programming. On a car equipped with KAFAS (LDP+Collision Warning), performing this retrofit is fairly easy - the hardest part is removal of the center console.

Please feel free to ask any questions and we will definitely post more videos and information soon. We just completed this yesterday and wanted to share our initial videos first.
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Last edited by BPMSport; 04-07-2021 at 06:27 PM..
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      04-07-2021, 05:21 PM   #2
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Videos of this in action:





Note that this retrofit will be offered for all F series vehicles (M and non M) with KAFAS2 - not exclusively for the F85/F86 but also the F10 M5 and F06/12/13 M6 as well.

You will see it lose lane detection a couple of times in the video, but 95% of the time it works very well when used as designed. For full transparency we wanted to also include this for viewing.
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Last edited by BPMSport; 04-07-2021 at 06:25 PM..
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      04-07-2021, 05:35 PM   #3
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Very interesting
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      04-07-2021, 05:45 PM   #4
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I'd love it on my f23. What's the estimated cost?
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      04-07-2021, 05:46 PM   #5
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I have an F10 LCI (2015) that has ACC and Driver Assist features from the factory (including Parking Assistant). OP, can you tell me what it would take to add TJA to it?
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      04-07-2021, 06:07 PM   #6
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Nice work Mike! Definitely an oversight not having this from the factory. Glad to see this is a possibility!
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      04-07-2021, 06:16 PM   #7
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Nice mike . Thanks for sharing in the chat and here as well !
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      04-07-2021, 06:29 PM   #8
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Quote:
Originally Posted by amutti View Post
I'd love it on my f23. What's the estimated cost?
Gotta be pricey
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      04-07-2021, 06:43 PM   #9
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Wow. That's great gob.

Group install???
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      04-07-2021, 07:06 PM   #10
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Would absolutely love this in Austin!

Can't wait to see how hurt my wallet will be
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      04-07-2021, 07:27 PM   #11
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Lovely. However I would not like drive a M like a Tesla lol
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      04-07-2021, 07:35 PM   #12
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Quote:
Originally Posted by dwz View Post
Lovely. However I would not like drive a M like a Tesla lol
Agreed! I enjoy every second behind the steering wheel. No one can take control of my car for half a sec.
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      04-07-2021, 08:47 PM   #13
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Nice work! Very interesting as our X7 (G07) came with ETJA (driver assistance pro option) and it only works up to 40mph and ONLY in traffic sensed by the car while you are in ACC mode. I wonder if it can be coded to allow EJTA to work up to 63mph?
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      04-07-2021, 08:51 PM   #14
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Do you have any idea on pricing yet, (1) for the kit and (2) for the install?
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      04-07-2021, 09:03 PM   #15
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Also, what buttons are you using to adjust the follow distance for the adaptive cruise control? Are you just coding a default distance and leaving it at that?

Last edited by tominfhl; 04-08-2021 at 06:10 AM..
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      04-07-2021, 10:17 PM   #16
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Quote:
Originally Posted by walmark View Post
I have an F10 LCI (2015) that has ACC and Driver Assist features from the factory (including Parking Assistant). OP, can you tell me what it would take to add TJA to it?
New steering wheel if you got KAFAS camera already. Or you can build or buy an emulator instead of a new steering wheel.
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      04-07-2021, 10:19 PM   #17
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Quote:
Originally Posted by djbonsu View Post
Nice work! Very interesting as our X7 (G07) came with ETJA (driver assistance pro option) and it only works up to 40mph and ONLY in traffic sensed by the car while you are in ACC mode. I wonder if it can be coded to allow EJTA to work up to 63mph?
Yes, you can. Default speed limit on F15/85 is not 63 mph either.
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      04-08-2021, 12:40 AM   #18
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ohhh?

where's this set?
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      04-08-2021, 04:32 AM   #19
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Does the F15 X5 have hydraulic steering? if yes, will it be possible to retrofit TJA for my F1x M550d LCI with driving assistant plus (the car does not have TJA because of the hydraulic steering).
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      04-08-2021, 07:19 AM   #20
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Quote:
Originally Posted by tominfhl View Post
Do you have any idea on pricing yet, (1) for the kit and (2) for the install?
I'm waiting to know this as well!!
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      04-08-2021, 08:22 AM   #21
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Gotta love the effort
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      04-08-2021, 09:18 AM   #22
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Love it! Could be my next project in my F80
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