Battery drain

Steering Wheel & Radio Replacement Combo
Post Reply
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: 5135
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: 5135
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

Post Reply

Return to “Maestro RR”