Battery drain

Steering Wheel & Radio Replacement Combo
17brz
New User
Posts: 29
Joined: Sat Mar 24, 2018 10:42 am

Battery drain

Post by 17brz » Thu Sep 20, 2018 6:55 pm

Since installing the Maestro RR (with a Pioneer AVH-2330NEX) in my 2017 BRZ, I’ve noticed that the battery drains rather quickly at the rate of about .2-.3 volts per day... so basically if I don’t drive the car at least every 4 days or so the battery will be too flat to start the car. I charged the battery and reinstalled the factory radio to verify the source of the drain and the drain stops with the factory radio in place.
So it possible that something in the programming of the Maestro RR is not shutting it off or in some other way causing this battery drain?

User avatar
Dara DeGrand
ADS Team
Posts: 5799
Joined: Mon Dec 02, 2013 1:34 pm

Re: Battery drain

Post by Dara DeGrand » Fri Sep 21, 2018 6:13 am

On the TO1 harness, there is a green 10-pin plug, and it has two blue wires in it. If you meter those with the car off, one of them will have voltage on it. Cut this wire, and your drain issue should go away.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

17brz
New User
Posts: 29
Joined: Sat Mar 24, 2018 10:42 am

Re: Battery drain

Post by 17brz » Fri Sep 21, 2018 10:46 am

Dara DeGrand wrote:
Fri Sep 21, 2018 6:13 am
On the TO1 harness, there is a green 10-pin plug, and it has two blue wires in it. If you meter those with the car off, one of them will have voltage on it. Cut this wire, and your drain issue should go away.
Both of the solid blue wires (they’re were also blue striped wires, but I’ll assume we aren’t talking about those) on the green 10 pin seem to be showing about 12 volts, but one wire connects to a blank/missing pin on the vehicle harness and the other wire is what I have the power lead for the FM antenna adapter connected to. I guess it would be safe to assume that cutting the wire that connects to nothing won’t accomplish anything and that I should clip the wire that is currently supplying power to the FM antenna adapter?

17brz
New User
Posts: 29
Joined: Sat Mar 24, 2018 10:42 am

Re: Battery drain

Post by 17brz » Mon Sep 24, 2018 11:29 am

I clipped the blue wire that the antenna was connected to and the other blue wire was already connected to nothing. Unfortunately the battery is still draining. Could there be anything else with the RR that is causing the drain?

COBlue
New User
Posts: 3
Joined: Sat Oct 27, 2018 11:09 am

Re: Battery drain

Post by COBlue » Sun Nov 04, 2018 9:42 am

This is more than a little concerning - really don't want to come back from a business trip to a dead battery!
1) Is this a confirmed issue?
2) Sounds like the suggestion to clip the blue wire didn't work?
3) Is this the ANT+ blue wire on pin 8 of the 10 pin plug? And if so why would this be designed to be constantly powered and draining the battery?

User avatar
Dara DeGrand
ADS Team
Posts: 5799
Joined: Mon Dec 02, 2013 1:34 pm

Re: Battery drain

Post by Dara DeGrand » Tue Nov 06, 2018 10:27 am

We are aware of the issue, which pretty much only occurs in BRZ/FRS/Toyota 86. If you de-pin pin 9 of the green 10-pin plug (the blue wire), it should fix the issue. Now that the SU2 harness and firmwares are released, we are planning on switching these cars to that platform, which should fix the issue entirely. Check your PMs.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

tivv00
New User
Posts: 1
Joined: Wed Dec 26, 2018 1:23 am

Re: Battery drain

Post by tivv00 » Wed Dec 26, 2018 1:29 am

I've tried the solution, but it did not fully help.
To test I just disconnected the green connector altogether. With green connector the drain is 70mAh. Without green connector the drain is ~30 mAh that is still not acceptable.
I fixed it by not giving constant +12 to iDataLink at all - I connected yellow wire to ignition +12. Looks much better now.

rxbrews
New User
Posts: 1
Joined: Mon Apr 08, 2019 8:23 pm

Re: Battery drain

Post by rxbrews » Mon Apr 08, 2019 8:26 pm

I have been having the same issue with my 2010 Toyota Tundra. I have the Kenwood DMX7705S and the idatalink Maestro TO1. If I don't drive the truck for more than a few days it won't start for me. Should I also start cutting wires to stop the drain that I have measured with a DMM.

User avatar
Dara DeGrand
ADS Team
Posts: 5799
Joined: Mon Dec 02, 2013 1:34 pm

Re: Battery drain

Post by Dara DeGrand » Tue Apr 09, 2019 11:59 am

I recommend trying the tip mentioned above, metering the solid blue wires in the green plug to see if they have voltage on them at all times.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

sequoia10
New User
Posts: 4
Joined: Tue Apr 16, 2019 12:09 am

Re: Battery drain

Post by sequoia10 » Tue Apr 16, 2019 12:18 am

I'm seeing same issue on 2010 Toyota Sequoia with Pioneer MVH-2400NEX. Radio integration works otherwise perfectly, except large parasitic drain, using clamp current meter (at battery terminal) I've measured about 140-150mA drain when vehicle is off and "sleep". After unplugging Maestro harness from the car, drain dropped (to more normal) 30-40mA, so it appears Maestor/TO1 is drawing about 100mA when car is off...

As suggested earlier, I checked the blue wires on the green 10-pin connector on the harness, and don't see voltage on any of the blue wires when car is off.

User avatar
Dara DeGrand
ADS Team
Posts: 5799
Joined: Mon Dec 02, 2013 1:34 pm

Re: Battery drain

Post by Dara DeGrand » Tue Apr 16, 2019 7:39 am

If you don't see voltage on those wires, that isn't where the current draw is coming from. I recommend doing a proper current draw test, removing one component at a time (unplug the radio first, note its draw, then the maestro, one plug at a time, with the power plug last. I like to note if it changes with each plug so you can see where you started and what each plug is doing). If unplugging a certain connector/component causes the current draw to drop, you know the general area in which the current draw is occurring.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

sequoia10
New User
Posts: 4
Joined: Tue Apr 16, 2019 12:09 am

Re: Battery drain

Post by sequoia10 » Wed Apr 17, 2019 12:53 am

I noticed that current draw will disappear if one removes and replaces fuse for the radio circuit ("RADIO NO.1" fuse for Tundra/Sequoia). Excess current draw is gone, until truck is turned on and off again, and then its back again... (Same behavior can be reproduced by only disconnecting and reconnecting 3-pin power connector to Maestro RR).

This would seem to point a "software" issue (?), like something is not turning "off" after truck is turned off...

I see if I can tomorrow further test unplugging connectors one by one (starting from the radio), and check any drops on current draw for each...

User avatar
Dara DeGrand
ADS Team
Posts: 5799
Joined: Mon Dec 02, 2013 1:34 pm

Re: Battery drain

Post by Dara DeGrand » Wed Apr 17, 2019 8:14 am

That doesn't help us much, because both the radio and Rr are on that circuit. You would need to troubleshoot like I stated above; test by removing the radio, then one plug at a time from the Rr (power left until the very last one), to see which plug on the Rr causes it.

We have seen hundreds of this trim of Sequoia flashed for this firmware and not had a report of current draw, so we'll have to tackle this as a unique case.
Dara DeGrand
Maestro Technical Support Manager
Automotive Data Solutions Inc.
8400 Bougainville, QC
T 514.807.2888
TF 866.427.2999

sequoia10
New User
Posts: 4
Joined: Tue Apr 16, 2019 12:09 am

Re: Battery drain

Post by sequoia10 » Wed Apr 17, 2019 6:13 pm

This about 100mA drain is significant, but as Tundra/Sequoia usually come with relatively large battery, this may go unnoticed for long time. It took for me about three months to notice anything, and that was only because car happened to sit 2+ weeks unused, and after that start was slow... If car is driven regularly this may go unnoticed.

I measured current draw (drop), when disconnecting connectors one by one:

Radio
- radio connectors (other than main power connector) - no change
- radio main/power connector - 2mA drop

Maestro RR
- other connectors - no change
- Green (10-pin) connector - 100mA drop
- 3-pin main power connector - 20mA drop

User avatar
Zack Flynn
ADS Team
Posts: 568
Joined: Mon Dec 12, 2011 9:46 am

Re: Battery drain

Post by Zack Flynn » Wed Apr 17, 2019 7:07 pm

Try clipping the 2 blue wires in the green connector, one at a time, and see if the drain goes away. Make note of which is which when cutting them, and which if either cause the drop in current drain.
Zack Flynn
Automotive Data Solutions
Technical Support & MECP Master Installation Technician
Zachary.flynn@adsdata.ca

Post Reply

Return to “Maestro RR/RR2”