945
this post was submitted on 27 Mar 2024
945 points (99.4% liked)
Technology
59137 readers
2332 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
According to the diagram I'm looking at? The front door handle receives the entry signal from the key that's in proximity to the vehicle (I think it's something like within three feet). That signal is sent to a BCM (ECU), that then talks to other PAssive entry antennas on the vehicle to unlock the door. Simultaneously it talks to the PCM and IPC through the Gateway module, sending a Passive Entry enable signal. Those modules talk to the ignition switch allowing the vehicle to be started. Looks like this happens on what's called the High Speed CAN network. So the question is, if I can access this network via something like the PCM and the PCM isn't properly configured to prevent this, can I override the network without having the key with sufficient tech? That's problematic for a lot of reasons. So no. I don't think you should be able to go to a junkyard or pick and pull and buy a module that could compromise your network and I don't understand why anyone would want that. You absolutely can buy a module from the manufacturer and get a shop (not even a dealership, just an independent shop with the right tools) to configure a module.