My 2005 s40 cranks and starts then the gauges go haywire and car headlights start to flash then the car stalls out but this was alll after my alarm horn went off out of nowhere and stayed on until I removed the fuse

 

Check your battery voltage, then check that all the links around the battery are "passing power" correctly.

 

I have a battery jumpstart that also tell how charged or how much bolts it gives off and with the car off it’s reading perfectly fine at 12.4 volts my dash said “immobilizer see Manuel”

 

If your immobilizer is keeping the car from starting, it's because it's not recognizing the key(s). It sounds like something bad happened to your car that caused the alarm to go off and the immobilizer to lose its memory.

As long as you have the immobilizer problem, the car won't start (don't know if that can be the cause of your other symptoms). I'd suggest doing a search on immobilizer in this forum to see if you can find any good advice on how to proceed... Otherwise, it's an expensive trip to the dealership.

 

yea unfortunately it looks like I’m going to have to go to a dealership. I have nothing bad to say about my s40, it was running beautiful , I had no issues with it. At first the car did start then the gauges went crazy and it stalled out which was 6/20/2021 then on 6/22/2021 i tried starting it up and nothing. Key then got stuck in ignition