Jump to content
SAU Community

Recommended Posts

Hi all,

This is my first post but i have been a long time reader of SAU it has helped me out numerous times.

However i have a problem that no one else has and was seeking guidance on how to go about fixing it.

So in sydney been raining hard for the last couple of days so drive my stag to work all is fine, go to drive home strange things start to happen.

So M35 is having electrical seizers and by that i mean when i turn the engine over the head lights start flashing the tacho bounces from 0 - 7k, the temp gauge goes hot to cold engine lights flash on and off, the indicators work intermittently the window wipers are the same. The car drives fine, seems to shift a bit rough but heres the weird thing everything works normal if you leave the car on battery and dont turn the engine on.

Ok so the things i have tried to fix it

checked codes 0000

reset codes

disconnect the battery and unplug the ECU

checked all the fuses every thing ok

Im not that car savy so if you could point me in the right direction that would be great.

Thanks

Link to comment
https://www.sau.com.au/forums/topic/418868-m35-electrical-woes/
Share on other sites

Hhahah. Water in The body control module.

In the Rhs of the drivers footwell, there is a hatch to the fuse box. Open her up, and check for moisture. You need to dry it out with a hair dryer of some thing. If it gets a bit damp, weird stuff starts happening. Just ask jetwreck!

Also check the relay box isn't wet, it's behind the battery. If the battery compartment drain is blocked it can cause issues similar to this, but it does sound like the BCM in the drivers foot well.

if youre in Sydney or Melbourne, there are spare parts available if you need them. stuff may have started corroding, but drying them should get it back.

also check the negative connection on the battery, and connections to the chassis.

im so glad i noticed this thread the other day.... wife woke up to go to work this morning, and same thing.. nothing working, exactly the same symptoms as above..

i do have one additional question... how the heck is water getting into the foot well?

are there any known places and preventatives..as its the wifes car id like this not to happen again if possible.\

really makes to box shift terribly as well.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • A few small updates since the previous post and lessons. I decided to do a little interior light upgrade on the 110. I quite like the iilumo items, even if they're a bit of a premium over other brands. You'll also note the Stedi Fogs, that will go into the S15 fog lights as I needed to match the bulbs since I got the new ones earlier. I hope they fit as the body is quite a bit longer than your normal bulb.  Annoyingly, I managed to trip the fuse, which normally wouldn't be an issue until I located the fuse. I can't say I've ever come across this. I had lucked out that someone nearby had a spare, but oddly enough Toyota dealerships seem to keep this in stock. I ordered some to keep in my stash and as luck would have it, someone else nearby tripped the same fuse so I passed on the favour.  I also did a little service on the 110 ahead of some additional work coming up. It's been annoying that Goleby's stopped carrying this particular HKS filter for the 110, so now I need to keep them on order from Japan. I also took the opportunity to install a bash plate and number plate riser. The plate riser is such a cheap but nice fix to help really tidy up the car. I'm tempted to now also replace my headlights, on this car. Both items were from Project Aero.    I also needed to replace the rear tyres on the 110, and after trying to get it aligned learnt that I need to replace some bushes in the front end, so that's next.  Closing out this update with a nicer picture as always! 
    • Yeah mate, never miss it.
    • Any going to watch World Time Attack at SMSP this year?
    • Appreciate the correction on the "ground", that will make a huge difference to looking at this. That makes complete sense about AF70/AF71 which is what I had come down to being the issue, one of these. I'll have another look in the ignition wiring when I get a chance next week. I'll also make up a jumper wire for running that AF73 test.  ECU is fine, relay itself is fine, pump harness is fine and the pump itself is fine. I am going to upgrade the Walbro 255 anyway with a DW300 I have since I need to replace the fuel sender and I'm going to upgrade the FPR with my chasebays kit ready for new plenum/injectors/dbw, but I'll get this working first. That's why this is so frustrating. 
×
×
  • Create New...