Issue with wifi obd2 dongle - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

cat94 · 06-11-2017, 12:21 AM

Hello,

I recently purchased an elm327 wifi obd2 dongle and use it with the DashCommand app on an iphone.

I would like to disconnect the device whenever I'm not driving, because the dongle stays active & relatively warm if I leave it plugged in. The only issue I have with this is that every time I disconnect the device, I have to go through the following steps:

(1) Forget the wifi network on my phone
(2) Plug the dongle in
(3) Turn the car on
(4) Connect to the wifi
(5) Set the static IP address & subnet mask

If I don't do this, I am able to connect to the dongle's wifi network but the DashCommand app isn't able to connect to the interface.

As you can imagine, it would be ideal if I could disconnect and reconnect the device and not have to re-configure the network every time. Has anyone found a solution to this problem?

I can't tell if this is an issue with the app or the device, but I can't seem to find anything online about this behavior.

TofuJoe · 06-11-2017, 12:43 PM

I use DashCommand with a Kiwi3 over Bluetooth.
1. Plug in dongle
2. Open app and tap the Connect button

Of course it's a $99 dongle instead of $15, but it works reliably and has a faster data update rate for use with Harry's Lap Timer.

darko · 06-11-2017, 01:52 PM

not sure if this is for iphone, but download an app called Tasker. It can be programmed for what you want

spd · 06-12-2017, 10:25 AM

^I would agree with Tasker but his first sentence mentions iPhone. Maybe IFFT can do it?

I always found bluetooth OBD2 readers to be really slow and problematic, so for the BRZ I just went with an OBDLink SX USB cable plugged into my Android headunit (~$25). It gives instant updates with no lag compared to the bluetooth types. It also goes to sleep when not in use to save battery.

cat94 · 06-12-2017, 01:08 PM

Right, my issue is isolated to iPhones/wifi obd2 adapters as far as I know. If I leave the dongle plugged in 24/7 there are no issues connecting.

The problem is if I disconnect the device, I have to "forget" the OBD2 wifi network on my phone, then reconfigure the IP/gateway in order for DashCommand to connect.

allowe · 06-13-2017, 02:53 PM

You really shouldn't leave it plugged in as I fried 2 of those dongles. 1 bluetooth and the other wifi. Also, someone could reset your ecu if you leave it plugged in and someone has a program like dashcommand. I did that to a friend as a prank but I told him about it after.

Sent from my iPhone using Tapatalk

cat94 · 06-13-2017, 06:53 PM

Quote:

Originally Posted by allowe

You really shouldn't leave it plugged in as I fried 2 of those dongles. 1 bluetooth and the other wifi. Also, someone could reset your ecu if you leave it plugged in and someone has a program like dashcommand. I did that to a friend as a prank but I told him about it after.

Sent from my iPhone using Tapatalk

Didn't think of that.. so I'm guessing when the dongle is disconnected and reconnected, it's signature or something changes and the app no longer recognizes it?

06-11-2017, 12:21 AM	#1
cat94 Senior Member Join Date: Nov 2016 Drives: '17 86 Location: CA Posts: 198 Thanks: 91 Thanked 46 Times in 34 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Issue with wifi obd2 dongle Hello, I recently purchased an elm327 wifi obd2 dongle and use it with the DashCommand app on an iphone. I would like to disconnect the device whenever I'm not driving, because the dongle stays active & relatively warm if I leave it plugged in. The only issue I have with this is that every time I disconnect the device, I have to go through the following steps: (1) Forget the wifi network on my phone (2) Plug the dongle in (3) Turn the car on (4) Connect to the wifi (5) Set the static IP address & subnet mask If I don't do this, I am able to connect to the dongle's wifi network but the DashCommand app isn't able to connect to the interface. As you can imagine, it would be ideal if I could disconnect and reconnect the device and not have to re-configure the network every time. Has anyone found a solution to this problem? I can't tell if this is an issue with the app or the device, but I can't seem to find anything online about this behavior.

06-13-2017, 02:53 PM	#6
allowe Senior Member Join Date: Sep 2016 Drives: FR-S Location: mississauga Posts: 576 Thanks: 227 Thanked 122 Times in 89 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	Issue with wifi obd2 dongle You really shouldn't leave it plugged in as I fried 2 of those dongles. 1 bluetooth and the other wifi. Also, someone could reset your ecu if you leave it plugged in and someone has a program like dashcommand. I did that to a friend as a prank but I told him about it after. Sent from my iPhone using Tapatalk

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06-11-2017, 12:43 PM	#2
TofuJoe Ohne Titel Join Date: May 2015 Drives: 2017 BRZ PP ISM Location: SF Bay Area Posts: 684 Thanks: 1,141 Thanked 412 Times in 234 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	I use DashCommand with a Kiwi3 over Bluetooth. 1. Plug in dongle 2. Open app and tap the Connect button Of course it's a $99 dongle instead of $15, but it works reliably and has a faster data update rate for use with Harry's Lap Timer.

06-11-2017, 01:52 PM	#3
darko Senior Member Join Date: Mar 2015 Drives: RAVEN FRS Location: Canada Posts: 148 Thanks: 31 Thanked 36 Times in 33 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	not sure if this is for iphone, but download an app called Tasker. It can be programmed for what you want

06-12-2017, 10:25 AM	#4
spd Member Join Date: Feb 2017 Drives: wrx, brz Location: CT Posts: 26 Thanks: 3 Thanked 20 Times in 8 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	^I would agree with Tasker but his first sentence mentions iPhone. Maybe IFFT can do it? I always found bluetooth OBD2 readers to be really slow and problematic, so for the BRZ I just went with an OBDLink SX USB cable plugged into my Android headunit (~$25). It gives instant updates with no lag compared to the bluetooth types. It also goes to sleep when not in use to save battery.

06-12-2017, 01:08 PM	#5
cat94 Senior Member Join Date: Nov 2016 Drives: '17 86 Location: CA Posts: 198 Thanks: 91 Thanked 46 Times in 34 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Right, my issue is isolated to iPhones/wifi obd2 adapters as far as I know. If I leave the dongle plugged in 24/7 there are no issues connecting. The problem is if I disconnect the device, I have to "forget" the OBD2 wifi network on my phone, then reconfigure the IP/gateway in order for DashCommand to connect.

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