Wtf is this thing

[POS100S]

I have no idea what this thing under the hood of my 1999 landcruiser is. It is wired into the harness in the engine bay and a wire running into the fuse box, any help would be appreciated

 

[frawstme]

Can you look for markings on it or get better pictures?

on my car that's where the controller for the wiper blades sits, but it doesn't look like that

 

[kbfj621989]

Unscrew it and see if there are any markings on the back. Where do the white wires go to?

 

[frawstme]

the fact that the blue wire is cut means whatever it is probably is disabled

it's definitely aftermarket, based on wiring. im guessing that the other ends of those wires are spliced and not connected

the yellowish square on it makes me feel like it's an alarm or sensor. Could be one of those trackers/disablers that buy here pay here dealerships put on their cars, but that's usually at the drivers foot well.

If it's neither of those, it could be a really old electric anti-rust control module

In any case I feel like youd be okay just removing it. It's aftermarket and disabled, so no harm could be done

i wasn't too far off, it's an immobilizer:

Thread 'mystery black box on firewall'

Apr 27, 2017

Bought a nice rust free, 119k mile '95 FZJ80 a couple months ago that didn't come with the keyless entry fobs but oddly had zero key scratches around any of the door locks, making me think it had to have keyless entry at some point or owners with surgeon-like steadiness in their hands. Investigating further I noticed a small black box on the firewall (at the top corner on the driver's side - see photo). It has two bundled wires coming out - one bundle has two in it, each of which go to a connector going into the starter, the other wire bundle also has two wires, with one going to the...

• Joshau
• black box mystery
• Replies: 17
• Forum: 80-Series Tech

 

[POS100S]

the fact that the blue wire is cut means whatever it is probably is disabled

it's definitely aftermarket, based on wiring. im guessing that the other ends of those wires are spliced and not connected

the yellowish square on it makes me feel like it's an alarm or sensor. Could be one of those trackers/disablers that buy here pay here dealerships put on their cars, but that's usually at the drivers foot well.

If it's neither of those, it could be a really old electric anti-rust control module

In any case I feel like youd be okay just removing it. It's aftermarket and disabled, so no harm could be done

i wasn't too far off, it's an immobilizer:

Thread 'mystery black box on firewall'

Apr 27, 2017

Bought a nice rust free, 119k mile '95 FZJ80 a couple months ago that didn't come with the keyless entry fobs but oddly had zero key scratches around any of the door locks, making me think it had to have keyless entry at some point or owners with surgeon-like steadiness in their hands. Investigating further I noticed a small black box on the firewall (at the top corner on the driver's side - see photo). It has two bundled wires coming out - one bundle has two in it, each of which go to a connector going into the starter, the other wire bundle also has two wires, with one going to the...

• Joshau
• black box mystery
• Replies: 17
• Forum: 80-Series Tech

Amazing work I appreciate it alot!

 

[sanscruiser]

I guess that it is not a rust inhibitor?