HV Battery Cooling Fan Replacement
#21
Re: HV Battery Cooling Fan Replacement
I have been getting the orange wrench light on the dash of my 2008 FEH (105k miles) intermittently since January. Since it would seem to go away just when I was anywhere near a dealership or auto parts store to check the diagnostics, I've let it go. Coincidentally or not, I've seen about an overall decrease of 5 MPG over the last 6 months or so.
I finally went to the dealership this morning to have them check it out (no wrench light at the time). They said the most recent diagnostic trouble code was P0A81, P0A96: trouble with both the cooling fans / control circuits.
They have to order the parts from a dealership in MD (I'm in MA) and estimate the job with cost $900-$1000. This seems high given the prices mentioned for the part(s) in this thread, and the difficulty level of the job.
I would think I need the fans replaced even if the wrench light is intermittent?
Thoughts/opinions?
I finally went to the dealership this morning to have them check it out (no wrench light at the time). They said the most recent diagnostic trouble code was P0A81, P0A96: trouble with both the cooling fans / control circuits.
They have to order the parts from a dealership in MD (I'm in MA) and estimate the job with cost $900-$1000. This seems high given the prices mentioned for the part(s) in this thread, and the difficulty level of the job.
I would think I need the fans replaced even if the wrench light is intermittent?
Thoughts/opinions?
#23
Re: HV Battery Cooling Fan Replacement
I have been getting the orange wrench light on the dash of my 2008 FEH (105k miles) intermittently since January. Since it would seem to go away just when I was anywhere near a dealership or auto parts store to check the diagnostics, I've let it go. Coincidentally or not, I've seen about an overall decrease of 5 MPG over the last 6 months or so.
I finally went to the dealership this morning to have them check it out (no wrench light at the time). They said the most recent diagnostic trouble code was P0A81, P0A96: trouble with both the cooling fans / control circuits.
They have to order the parts from a dealership in MD (I'm in MA) and estimate the job with cost $900-$1000. This seems high given the prices mentioned for the part(s) in this thread, and the difficulty level of the job.
I would think I need the fans replaced even if the wrench light is intermittent?
Thoughts/opinions?
I finally went to the dealership this morning to have them check it out (no wrench light at the time). They said the most recent diagnostic trouble code was P0A81, P0A96: trouble with both the cooling fans / control circuits.
They have to order the parts from a dealership in MD (I'm in MA) and estimate the job with cost $900-$1000. This seems high given the prices mentioned for the part(s) in this thread, and the difficulty level of the job.
I would think I need the fans replaced even if the wrench light is intermittent?
Thoughts/opinions?
The fans are very expensive. About $400 for me. Given that the official procedure calls for removing the entire battery, $1000 sounds about right. I'd suggest printing off the battery cover removal procedure and asking them to do that if you can't do it yourself or don't have time (like I didn't). It wound up being about $200 in labor for me, which was reasonable.
#25
Re: HV Battery Cooling Fan Replacement
The fans are very expensive. About $400 for me. Given that the official procedure calls for removing the entire battery, $1000 sounds about right. I'd suggest printing off the battery cover removal procedure and asking them to do that if you can't do it yourself or don't have time (like I didn't). It wound up being about $200 in labor for me, which was reasonable.
#26
Re: HV Battery Cooling Fan Replacement
Unfortunately, the only time I had was yesterday afternoon. It was the hottest day of the year - 105 degrees. It took me from noon to 3:30.
And, yes, that fan cover took some real coercing to get under the battery cover lip.
#27
Re: HV Battery Cooling Fan Replacement
Would a defective blend door prevent the fans from running? I just did a fan replacement, but they still don't come on. My hunch is that I've got a partially fried TBCM. I've smelled burning electronics smell back there, and I know the TBCM has two electrolytic capacitors that are the kind that can pop.
Capacitors are on this image:http://www.eaa-phev.org/images/7/7a/...oller_open.jpg
Capacitors are on this image:
#29
Re: HV Battery Cooling Fan Replacement
Ok. For anyone out there that replaces their fans and they still don't work, maybe my experience will provide some insight. Battery compartment (a.k.a. under the hood) fuse #15 (50 amp) is listed as TBCM (The control module inside the battery pack). This fuse wasn't blown in my case, but the wire running from it (White with a red stripe on a 2008 FEH) was corroded and there was about an inch of wire that was just gone from within the insulation with just the teal corrosion in it's place (same stuff you see on battery cables). I think my vehicle had hit a deer in a previous life, and this wire was probably nicked, allowing road salt and grime to get in there, and I also suspect this is why the vehicle was for sale in the first place. Anyhow, I replaced my entire battery pack thinking the problem was in the controller, and my fans still didn't work. What this means, is that the TBCM can work even when fuse #15 blows. The 12v side of the TBCM appears to only control the fans? Whatever the case, now I have an extra battery pack and an extra set of fans