OBDII power draw question
#1
Senior Member
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OBDII power draw question
Does anyone know if all OBDII devices draw power from our W211's even when the vehicle is off?
I'm looking to buy this: https://www.att.com/devices/zte/mobley.html
Thanks
I'm looking to buy this: https://www.att.com/devices/zte/mobley.html
Thanks
#2
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the light stays on no matter what. So, yes I believe it does.
#4
Senior Member
Thread Starter
Confirmed tonight, thanks guys.... The att wifi obdII device works extremely well, however, its two small led lights are still on and it's still emitting a hotspot after the car is turned off (at least directly thereafter). I'm gonna check in an hour to see if there's some kinda of delayed power cut.
Also, I might try this if I have to: "One thing worth mentioning, I didnt realize the device will draw power when the car was turned off, so your battery will drain if you leave it in." . . . . . . "I got around that with an ODB extension lead, cut the lead to pin 16 and put a relay to it so it only powers up when the ignition is on" source: https://www.reddit.com/r/Android/com...es_do_you_use/
Also, I might try this if I have to: "One thing worth mentioning, I didnt realize the device will draw power when the car was turned off, so your battery will drain if you leave it in." . . . . . . "I got around that with an ODB extension lead, cut the lead to pin 16 and put a relay to it so it only powers up when the ignition is on" source: https://www.reddit.com/r/Android/com...es_do_you_use/
Last edited by tubaprde; 10-15-2015 at 05:30 PM.
#5
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Update: OK so the ZTE Mobley is smart enough to stop drawing power (even turns off the small LED lights) once the car is off for several minutes. yahoo!
#6
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Oh I see, that is a WIFI hot spot that plugs in to your OBDII port.
I thought you were data logging or running Dash Command or log works.
Let us know how it works and how much the plan is.
I thought you were data logging or running Dash Command or log works.
Let us know how it works and how much the plan is.
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#8
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Works great and connects to my Android HU 3 seconds after the HU boots up. $20 for 2GB/mo or $30 for 3GB/mo are the standard rates.
I get a 20% discount through my work. So I'm paying about $25 for 3GB per month.
So I'm actually doing both.... I've purchased an OBDII splitter so I can run the wifi on one connector (only draws power from port) and the OBDII bluetooth scanner so I can run Torque App on the HU.
I get a 20% discount through my work. So I'm paying about $25 for 3GB per month.
So I'm actually doing both.... I've purchased an OBDII splitter so I can run the wifi on one connector (only draws power from port) and the OBDII bluetooth scanner so I can run Torque App on the HU.
Last edited by tubaprde; 10-15-2015 at 09:28 PM.
#9
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