New whining sound coming from front left.

while braking I have started to have a whining sound come from my front left of the car. It doesn't happen all the time from what I can tell but my wife drives it daily. I know what a brake squeel sounds like and this isn't it. It will only do it when the speed of the car gets to below 30mph and and seems to get louder the slower the car gets. I think it stops around 6 mph and I'm guessing that's when the regen braking stops and the pads kick in but I could be wrong. I'm going to drive it some today to see if I can get a better idea of exactly when it does it but in the meantime anyone have any ideas? Mpg hasn't changed and she still runs good as well.

After researching I think I need Tom now my MG1 and MG2 temps using my scan gauge. I'm trying to get the xgauge codes to work but I'm not having any luck. I will keep playing with it to see if I can get it to work.

Tom now???? Should be to know. Dang auto correct.

After reading it looks like I was trying to use a gen 3 code for my gen 2 so that's why its not working. I can't seem to find gen 2 codes for inverter temp. Anyone know where to get them?

 

Alright I found some codes that gave me the info I was looking for. It looks like MG1 was averaging aroun 118f and MG2 was averaging around 87-92.
Is this a normal temp spread for a healthy transaxle?

 

197k

 

Why would the inverter only be whining when applying the brakes? Would it be doing it consistently ?

 

I have been trying to get it to do it today but haven't succeded. It did it pretty bad last night twice and since hasn't done it. I am keeping my scan gauge hooked up so if it starts I can see what my temps are doing. Why would the inverter be intermittent with the problem?

 

That's what I've been waiting to try. Been riding around with my hand on the shifter to switch to neutral when I hear it but haven't had any luck. That should let me know if it's hydbrid system or brake system noise. Dang I hate intermittent problems.

 

Also as for generator whine being there from day one. This more of a loud whine and not normal when it happens. It's loud enough that people in other cars was looking at us.