JB+ and issues with Engine Deactivation?

Audioholics · 06-22-2017, 02:28 PM

Guys;

I recently installed a Burger JB+ to my 15 M235i and love the results.

However, I've noticed since install engine deactivation doesn't always engage, even in Eco mode. I see the indicator on the dash engage but the engine doesn't always shut off.

Is the added boost confusing the sensor that initiates this? Or is the capacitor bank just not charging enough when I do more HW driving and not enough braking?

beMtroubleYou · 06-24-2017, 08:37 AM

Are you talking about the start/stop function?

Its tempeture, runningtime, time since last shutdown and voltage sensitive if I remember correctly.

Most times its the battery. But if it indicates a shutdown and engine is still running it must be something electrical confusing the cluster rather then the function itself.

Again. I am just guessing.

m235iMike · 06-24-2017, 10:39 AM

mine does the same after i installed my jb4. mine never shuts down

2016F22xD · 06-24-2017, 11:32 AM

I think if you have SES light and JB4 is auto deleting the light for you, your engine will not engage in stop/go mode. I have BMS Intake, VSRF DP and JB4.

mike@x-ph.com · 06-27-2017, 06:23 PM

Quote:

Originally Posted by 2016F22xD

I think if you have SES light and JB4 is auto deleting the light for you, your engine will not engage in stop/go mode. I have BMS Intake, VSRF DP and JB4.

OP has a JB+, it does not have the ability to clear codes

Madmatt · 06-28-2017, 11:20 AM

Not sure this helps but I have a JB+ installed in my 2016 235i and I don't have this issue when running in ECO-PRO mode. Start/Stop functionality works as it did before the JB+ install.

Madmatt

Audioholics · 06-28-2017, 05:15 PM

Quote:

Most times its the battery. But if it indicates a shutdown and engine is still running it must be something electrical confusing the cluster rather then the function itself.

Yea it indicates the engine is shutting down but it actually does not. It seems random. Sometimes the start/stop engine shut down happens anytime I'm at a red light, other times it just doesn't. I figured maybe it had to do with whether or not I did a lot of HW driving prior but it does seem somewhat random.

orangeglim · 06-29-2017, 06:03 AM

There is no indicator on the the dash when it shuts down beyond the rpm need moving to ready. An indicator does show up when it has decided to NOT shutdown. Look in the manual, it covers all the various situations where it will and will not shutdown.

Audioholics · 07-01-2017, 07:08 PM

Yea I see the indicator saying the engine deactivation isn't active when the engine doesn't shut off. I'm just wondering how it decides this.

06-22-2017, 02:28 PM	#1
Audioholics Private 21 Rep 87 Posts Drives: M235i Join Date: Apr 2017 Location: Florida iTrader: (0)	JB+ and issues with Engine Deactivation? Guys; I recently installed a Burger JB+ to my 15 M235i and love the results. However, I've noticed since install engine deactivation doesn't always engage, even in Eco mode. I see the indicator on the dash engage but the engine doesn't always shut off. Is the added boost confusing the sensor that initiates this? Or is the capacitor bank just not charging enough when I do more HW driving and not enough braking?
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06-24-2017, 08:37 AM	#2
beMtroubleYou Private First Class 67 Rep 181 Posts Drives: M2C '18 Join Date: Feb 2017 Location: North EU iTrader: (0) Garage List 2018 M2C [0.00]	Are you talking about the start/stop function? Its tempeture, runningtime, time since last shutdown and voltage sensitive if I remember correctly. Most times its the battery. But if it indicates a shutdown and engine is still running it must be something electrical confusing the cluster rather then the function itself. Again. I am just guessing.
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06-24-2017, 10:39 AM	#3
m235iMike Private 71 Rep 94 Posts Drives: 2015 m235i, 94 Supra, 03 Evo Join Date: Nov 2014 Location: Long Island, New York iTrader: (0)	mine does the same after i installed my jb4. mine never shuts down __________________
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06-24-2017, 11:32 AM	#4
2016F22xD Enlisted Member 15 Rep 45 Posts Drives: 2016 M235i xDrive Join Date: Aug 2011 Location: Eastside / Seattle iTrader: (0)	I think if you have SES light and JB4 is auto deleting the light for you, your engine will not engage in stop/go mode. I have BMS Intake, VSRF DP and JB4.
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06-28-2017, 11:20 AM	#6
Madmatt Private 43 Rep 58 Posts Drives: 2016 M235i Join Date: Apr 2016 Location: Cincinnati, Ohio iTrader: (0)	Not sure this helps but I have a JB+ installed in my 2016 235i and I don't have this issue when running in ECO-PRO mode. Start/Stop functionality works as it did before the JB+ install. Madmatt __________________ 2016 F22 M235i Black/Black * ZF8 AT * ZTP * ZDA * ZCW * H/K * JB+ 2015 F15 X5 50i Mineral White Metallic/Mocha
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06-29-2017, 06:03 AM	#8
orangeglim Lieutenant 345 Rep 442 Posts Drives: 2019 M2C Join Date: May 2016 Location: NC iTrader: (0) Garage List 2019 M2C [0.00]	There is no indicator on the the dash when it shuts down beyond the rpm need moving to ready. An indicator does show up when it has decided to NOT shutdown. Look in the manual, it covers all the various situations where it will and will not shutdown.
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07-01-2017, 07:08 PM	#9
Audioholics Private 21 Rep 87 Posts Drives: M235i Join Date: Apr 2017 Location: Florida iTrader: (0)	Yea I see the indicator saying the engine deactivation isn't active when the engine doesn't shut off. I'm just wondering how it decides this.
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