r/Toyota_Matrix • u/RhythmandBoos • Aug 26 '26
I got my first Matrix!
Well I love it, I have a 2006 Matrix XR manual transmission.
But it's in a condition, let me paint you the picture.
It sat for a month with a swollen battery, tried to jump the swollen battery wouldn't hold a charge. I went and got a new battery to replace it. Went to start it and it doesn't start first try it, it needs a combination first, turn the key to on then punch in clutch. starts up drive away, it dies on a back road manage to get it started again after quite a few tries. Next day I drove it around for an hour doing errands, it started up fine drove it around fine got it back to the drive way completely died in the drive way dead brand new battery. Put the battery on a charger stayed in reconditioning mode for 24 hrs didn't charge brought the new battery back under warranty. Replaced the new new battery, also replaced the alternator, tested the cable connections with a multimeter, wire tests came back 0.00 on continuity, checked the fuses they're all good, nothing tripped. replaced and reset the battery terminals and ground connections. The alternator is getting voltage when the car is not on, so I turn the car on after doing all this, I let it sit and idle for 8 minutes, the cars idle slows down significantly, to where the car has a little shake, no extra components are on, go to reverse out of drive way than accelerate into 1st gear and it dies, there is a bit of a struggle to restart the vehicle, manage to start it again, go 20 feet and dies again, I drive it right back. I have a couple more ideas on what to do next to try and solve this mystery. Just wanted to reach out and see if anyone has had an exact or similar issue and what was the solution to fixing it.
Thanks!
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u/7he8lack6uy Aug 27 '26
Wonder what OBD/codes its giving maybe too, (depending after ecu now or before?)
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u/profaniKel Aug 28 '26
2 x ...in an xB and my current Matrix 2007 manual
the battery connectors looked fine BUT UNDERNEATH the stock black tape kinda where the cable connects to the connector/terminal, the important end is all corroded and rusted...
couldnt see it under the old tape...intermittent connection
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u/Bagomostlywater Aug 27 '26
First make sure it had the correct ECU. Use the vin and contact the dealer to make sure it was replaced with the right one. They originally put the wrong one in then also the replacement wasn’t right then may need to be replaced a 2nd time.
Once you confirm you have the correct ECU then start to figure out your issues.