MHD won't connect with ignition on

Gnars · 05-29-2018, 06:23 PM

So I made a post earlier about my ecu acting up after single turbo install. Well now the ecu is running again and the car is running again on the stock map thanks to ecu specialist Ercan. But it still will not connect to the dme when just the ignition is on I can connect to the dme via laptop and I can read codes on my tablet when the car is running but when just the ignition is on I get no connection to the dme. Any fuse or something that could be the cause of this? I've contacted MHD waiting for a response, any ideas?

Rotorocious · 05-29-2018, 10:09 PM

Does your cable have a switch built in?

Gnars · 05-29-2018, 10:17 PM

Quote:

Originally Posted by Rotorocious

Does your cable have a switch built in?

Yeah I've tried it on both settings

TeinBMW · 06-06-2018, 12:22 PM

Are you sure the car is in the on position? Don't have your foot on the brake and hit the start button. I have seen some owners make this mistake.

Hopefully you got this resolved!!

NDB24 · 06-07-2018, 09:15 AM

Which cable do you have? I had the same issue and to fix it all I did was move the switches and try to connect again.

DoctoRx · 06-07-2018, 08:41 PM

Having this same issue with my car. I have MHD loaded onto my phone for ease. Upgraded phones and the cables won't connect to the new phone for some reason.

Gnars · 06-09-2018, 08:20 AM

Quote:

Originally Posted by TeinBMW

Are you sure the car is in the on position? Don't have your foot on the brake and hit the start button. I have seen some owners make this mistake.

Hopefully you got this resolved!!

Yeah it's just the ignition on, and the issue fixed itself same cable same tablet just decided to start working lol

mo0di · 06-10-2018, 02:42 PM

i need to tune my car but i dont how can someone help me

Supermoon · 06-11-2018, 12:21 AM

I experience the same issue with the One-stop-electronics cable.
I just keep re-connecting until it works. Normally 3-4 times.

bjf66 · 05-26-2019, 05:34 AM

I'm still experiencing this issue with the One Stop Electronics cable.

Does anyone know a fix for this? Or do I need to keep trying?

What happens is with Ignition on, plugged cable in, it lights up and connects for a few seconds - then turns off and MHD can no longer detect the cable.

05-29-2018, 06:23 PM	#1
Gnars Private 5 Rep 53 Posts Drives: 2007 E92 335i Join Date: Jun 2016 Location: South Carolina iTrader: (0)	MHD won't connect with ignition on So I made a post earlier about my ecu acting up after single turbo install. Well now the ecu is running again and the car is running again on the stock map thanks to ecu specialist Ercan. But it still will not connect to the dme when just the ignition is on I can connect to the dme via laptop and I can read codes on my tablet when the car is running but when just the ignition is on I get no connection to the dme. Any fuse or something that could be the cause of this? I've contacted MHD waiting for a response, any ideas?
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05-29-2018, 10:09 PM	#2
Rotorocious Lieutenant Colonel 106 Rep 1,520 Posts Drives: 335xi Join Date: May 2010 Location: Colorado iTrader: (3)	Does your cable have a switch built in?
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06-06-2018, 12:22 PM	#4
TeinBMW Lieutenant Colonel 134 Rep 1,946 Posts Drives: 2011 335xi Msport, Conv, Tech Join Date: May 2013 Location: Calgary iTrader: (2) Garage List 2011 BMW 335xi [7.00]	Are you sure the car is in the on position? Don't have your foot on the brake and hit the start button. I have seen some owners make this mistake. Hopefully you got this resolved!! __________________ \|11 335XI N55 \| M SPORT \| VRSF CP \| BMW PE \| BMS INSTAKE \| VRSF 7" IC \| MHD STAGE 2+ \| ER CP \|
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06-07-2018, 09:15 AM	#5
NDB24 Private First Class 25 Rep 119 Posts Drives: 2016 340i xDrive Join Date: Mar 2017 Location: Queens, NY iTrader: (0)	Which cable do you have? I had the same issue and to fix it all I did was move the switches and try to connect again.
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06-07-2018, 08:41 PM	#6
DoctoRx First Lieutenant 54 Rep 336 Posts Drives: '11 e92 335i xDrive MSport Join Date: Sep 2013 Location: Houston iTrader: (1)	Having this same issue with my car. I have MHD loaded onto my phone for ease. Upgraded phones and the cables won't connect to the new phone for some reason.
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06-10-2018, 02:42 PM	#8
mo0di Private First Class 23 Rep 150 Posts Drives: bmw 335i 2012 CABRIO Join Date: Apr 2012 Location: KSA , JEDDAH iTrader: (0)	i need to tune my car but i dont how can someone help me __________________ E93 N55\| ppk- pe- AR dp MHD stage 2
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06-11-2018, 12:21 AM	#9
Supermoon Lieutenant 167 Rep 429 Posts Drives: 2011 e92 335xi Join Date: Aug 2015 Location: Seoul iTrader: (6) Garage List 2011 BMW 335i xDriv ... [10.00]	I experience the same issue with the One-stop-electronics cable. I just keep re-connecting until it works. Normally 3-4 times. __________________ 2011 E92 335i xDrive Pure Stage 1 \| DV+ & Inlet \| Injen Intake \| M3 Cowl \| ETS 5" FMIC & CP \| Aquamist HFS4 Direct Port \| CSF Radiator \| Wagner Catted DP \| BMW PE \| Apex FL-5 \| Michelin PS4S \| 335is Engine mount \| SDW Monoball thrust arms \| UUC Swaybars & SS Brake lines \| Bilstein B8 \| Dinan Springs & Shock mounts \| Whiteline RSFB \| M3 Rear Control arms \| Manzo Toe arms \| Wavetrac LSD
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05-26-2019, 05:34 AM	#10
bjf66 Banned 53 Rep 457 Posts Drives: E92 335is DCT Join Date: Mar 2011 Location: Wyoming iTrader: (0)	I'm still experiencing this issue with the One Stop Electronics cable. Does anyone know a fix for this? Or do I need to keep trying? What happens is with Ignition on, plugged cable in, it lights up and connects for a few seconds - then turns off and MHD can no longer detect the cable.
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