Pressure switch under battery tray?

[jeep_boss]

Bought a new Odyssey battery today. When i took out the old battery, there was (what looked like) a round pressure switch in the middle of my tray.

Any ideas on what it is or what it is for? The FSM is too tough to navigate on my phone

 

[Chris]

That is the battery temperature sensor. It's purpose is to insure the alternator doesn't overcharge the battery, or charge it at too high of a rate (which could overheat the battery & cause it to burst).

 

[StG58]

Bought a new Odyssey battery today. When i took out the old battery, there was (what looked like) a round pressure switch in the middle of my tray.

Any ideas on what it is or what it is for? The FSM is too tough to navigate on my phone

That's a temperature sensor that the ECM uses to monitor the battery. One of the inputs for controlling battery charge rate.

 

[jeep_boss]

I never would have guessed that! Very cool, thanks guys!

 

[Squatch]

First time I'd ever seen one was on a PT Cruiser. I thought "WTF?"...because, you know...it was a PT Cruiser....

 

[jeep_boss]

First time I'd ever seen one was on a PT Cruiser. I thought "WTF?"...because, you know...it was a PT Cruiser....

LOL!!!!!

 

[StG58]

First time I'd ever seen one was on a PT Cruiser. I thought "WTF?"...because, you know...it was a PT Cruiser....

PT Snoozers... That's a car I'm glad went away...Special Editions and all!

 

[Squatch]

Yeah, they were interesting for about twenty minutes. The Chevy HHR lasted a full hour!