I just swapped out the starter on my 2013 LX 570 with 131k miles as a maintenance item. The starter unit I removed had part number 28100-38080. It is the newer smaller housing design and Lexus parts sites state that this part number was used for Production Date: 07/2011-09/2015. The unit looked identical in design to the replacement starter I installed 28100-0S050. I was almost thinking someone had swapped the old one out already until I cross referenced the part numbers online.
Most the posts here are of people replacing the older units which appear to have been used in Production models between 07/2008-06/2011 with Part Number 28100-38041 (larger housing)
Have any of you on this forum have had the smaller housing part number
28100-38080 starter actually fail on them?
In any matter, my starter is replaced now after 8 hours of patience and awkward arm/body contortions reaching around the exhaust manifold. I feared that the removal of the manifold was going to be a can of worms with possibility of broken studs and other roadblocks.
Parts I removed:
-Disconnect Ground Cable from Battery
-2 Plastic shroud covers in the passenger wheel well
-Catalytic converter mid-pipe - unplugged the 2 O2 sensors first
-Oil Dipstick Tube has to come out to make removal of the heat shrouds possible
-Exhaust manifold heat shield shroud
-Starter heat shield shroud
-Starter: Lower bolt can be removed with a 14mm socket wrench. Upper bolt I used a long box wrench with cheater pipe for leverage
-Transmission cooler lines underneath - I didn't do this but seen others do for better access to the top bolt of the Starter better. I did remove the bracket bolt to the cooler lines so that I could move wiggle lines around as needed.
Notes on the Starter Heat Shroud removal/install:
The heat shroud around the starter like others mentioned is awful using this method leaving the exhaust manifold in. Its totally doable but you need to be patient. The 3rd upper 10mm bolt on this shroud needs to be done with a the open end of a 10mm wrench to avoid risk of getting your tool stuck. I started with a reversible 10mm ratchet wrench but backside of the bolt and wrench bound up against the exhaust manifold and got stuck. Thankfully I was able to use a screwdriver to flip the direction and tighten bolt back in and restart the process using the open ended 10mm wrench. I would have been hosed if my wrench wasn't reversible. Once 3 fasteners were out, the shield was still difficult to remove even with the smaller starter housing. I basically had to deform it to a flattened shape in order for it to finally slide out. Putting it back in wasn't too bad and I just formed the shroud back as best I could so that he bolt holes lined back up. Then used a long pair of needle nose pliers to insert the tough to reach 3rd bolt.
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