Do Not Sell My Personal Information Jump to content

Ls430 Electrical Gremlins. Help!


ozone
 Share

Recommended Posts

We have an 01 LS430 with 161K miles. Very few issues ever. Just yesterday, the car started acting up. It still runs and drives, but a whole laundry list of accessories suddenly stopped working. Here is what stopped working: (1) when you turn the key on, the dash doesn't go through it's usual self check routine, (2) air bag light on dash stays lit, (3) brake light on dash stays lit, (4) No display of an outside temperature, (5) No climate control functions work (either heat, A/C, or rear defog), (6) driver position preset buttons do not function, (7) wipers only work on high, (8) ABS light stays lit on dash.

There may be other things not working, but I haven't noticed them yet. This happened all at once. I started to check fuses, but haven't got very far. I am doubting I will find anything. Maybe a bad connector or one of the many computers on board? Someone suggested disconnecting the battery to reset the computers, but I haven't tried that yet. I'd like to fix this myself if I can. Thanks a lot for any suggestions.

Link to comment
Share on other sites

We have an 01 LS430 with 161K miles. Very few issues ever. Just yesterday, the car started acting up. It still runs and drives, but a whole laundry list of accessories suddenly stopped working. Here is what stopped working: (1) when you turn the key on, the dash doesn't go through it's usual self check routine, (2) air bag light on dash stays lit, (3) brake light on dash stays lit, (4) No display of an outside temperature, (5) No climate control functions work (either heat, A/C, or rear defog), (6) driver position preset buttons do not function, (7) wipers only work on high, (8) ABS light stays lit on dash.

There may be other things not working, but I haven't noticed them yet. This happened all at once. I started to check fuses, but haven't got very far. I am doubting I will find anything. Maybe a bad connector or one of the many computers on board? Someone suggested disconnecting the battery to reset the computers, but I haven't tried that yet. I'd like to fix this myself if I can. Thanks a lot for any suggestions.

After you check the fuses, put an OBDII reader on the port and see if there are any stored codes. How old is the battery? Original alternator?

Link to comment
Share on other sites

I would disconnect the battery for 5 minutes to reset everything. I'd also ensure a good charge on battery via outboard battery charger before reconecting cable. Then see if the various lights come on. Battery clamps need to be tight, not simply touching. If you can wiggle the clamp with your hand it is not tight enough.

Link to comment
Share on other sites

I would disconnect the battery for 5 minutes to reset everything. I'd also ensure a good charge on battery via outboard battery charger before reconecting cable. Then see if the various lights come on. Battery clamps need to be tight, not simply touching. If you can wiggle the clamp with your hand it is not tight enough.

I thought about the battery post connections but if it is good enough to supply the starter, it should be plenty good enough to supply auxiliary power. However, there is also the unknown as to what shape the auxiliary connection is in. One leg of the + goes directly to the starter and another to the fuse box (and also to the alt output). Sometimes that auxiliary connection is faulty within the main battery cable. However, it is also possible that a fusible link is acting up(hi-z or open altogether).

Link to comment
Share on other sites

Thanks for the suggestions. As it turns out, the next morning everything was fine and hasn't acted up since. Sort of rules out any fuses. I'm thinking a suspect connection somewhere. I guess I'll wait until it acts up next time before I look into it further. By the way, is there a way for me to see what kind of codes this is throwing if I don't have an OBD II?

Link to comment
Share on other sites

You can take your car to Autozone or O'Reilly's or whatever auto parts store you have near you. They will plug their reader in for you and give you the codes for free. I have done that before with another vehicle. I recently purchased an inexpensive one on Amazon.com just for convenience.

I would remove the cables from the battery as well for a few minutes, which resets the computers. I'm glad our cars aren't like Windows Vista (or 95 or 2000). We'd have to pull the battery terminals about once per week for a reset. Pretty inconvenient... :rolleyes:

Micah

Link to comment
Share on other sites

I'm glad our cars aren't like Windows Vista (or 95 or 2000). We'd have to pull the battery terminals about once per week for a reset. Pretty inconvenient... :rolleyes:

Micah

Not to mention the Bill Gates worldwide wait. You know the 5 minutes after power up while your system boots. :(

Link to comment
Share on other sites

I'm glad our cars aren't like Windows Vista (or 95 or 2000). We'd have to pull the battery terminals about once per week for a reset. Pretty inconvenient... :rolleyes:

Micah

Not to mention the Bill Gates worldwide wait. You know the 5 minutes after power up while your system boots. :(

Or the 10 minutes for shutdown. That's why I use a MacBook Pro. :lol:

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
×
  • Create New...

Forums


News


Membership