Battery cooling fan

Asked by Apr 09, 2017 at 05:39 PM about the 2007 Toyota Camry Hybrid

Question type: Maintenance & Repair

I own a 2007 Toyota Camry Hybred wth 100 k. Miles. I have a code checker
and the code said that it was a battery cooling problem. I swapped the fuse
and the relay. Now all indicator lights are on and the fan runs all the time.

6 Answers

5,100

You might have to have this issue serviced at the Dealership. I seem to remember a Factory Service Bulletin describing a dirty HV Battery Cooling Fan issue. The fan needing cleaning and a re-flash of a Computer. Try Googling you make model year and Hybrid Battery Cooling Fan.

The fan and duct ware clean. The fan wasn't working until I swapped the fan relay with another relay. Now the fan runs all the time plus all the warning lights stay on.

Last chanc garage, what do you mean by a re flash of a computer.

5,100

Ok....a reflash of a computer means an update to the software of said computer..this is usually performed at the dealership. Since you have a swapped relay in place of a correct relay...why not just go out and buy the CORRECT relay? But....then you have to properly clear all the codes so you can turn off those warning lights. Well...this is the problem with these computer controlled cars...you can not fix them like we used to in the good old days.

5,100

Hector...did you ever fix the problem with this vehicle?

For starters, anyone with a Toyota hybrid should purchase either a Mini-VCI cable, or the much better VCX cable. You can get one from the usual eBay, AliExpress, etc. With that cable you will use a Windows software application called Techstream. This will display the error codes for the car, and performs numerous other functions (eg turning off various annoying beeping sounds when reversing, opening doors, etc). Hybrid cars have a blower fan which blows air through the hybrid battery to prevent it from getting too hot. Heat kills batteries, so it is essential that the hybrid battery gets a supply of air. Over time dust and general junk will build up on the fan, reducing its ability to push air through. Thus, the fan needs to be removed and cleaned. It’s not particularly difficult. You will want to have a trim removal tool. Again, the usual eBay, AliExpress, etc. You can look on YouTube to find video clips showing how to remove the hybrid battery for your particular model of hybrid. In such videos, you will see the blower fan and learn how to gain access to it for cleaning.

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