Possible 1958 Mods

[b747mx]

Hello All,
We are seriously considering a 1958. There are two modifications I would like to make but I can’t seem to find a service manual for viability.
1. I would like to add the manual seat extension. I think this could be accomplished by adding the manual seat extension parts and a new seat cover over the lower cushion. I am not really concerned about things matching since I will be installing seat covers all the way around.
2. We are up north and heated exterior mirrors are a must. There are enough open buttons on the lower left side of the dash that I should be able to add one. If there is a “computer” I can plug the OEM one for the LC sitting behind the dash, even better. I seriously doubt the sales guy would let me dig that far into the vehicle to find out .

We really happy otherwise with the 1958 including the manual rear hatch etc. These are the only two things it is missing. There has got to be a way. - Thank you

 

[EOD Guy]

Hello All,
We are seriously considering a 1958. There are two modifications I would like to make but I can’t seem to find a service manual for viability.
1. I would like to add the manual seat extension. I think this could be accomplished by adding the manual seat extension parts and a new seat cover over the lower cushion. I am not really concerned about things matching since I will be installing seat covers all the way around.
2. We are up north and heated exterior mirrors are a must. There are enough open buttons on the lower left side of the dash that I should be able to add one. If there is a “computer” I can plug the OEM one for the LC sitting behind the dash, even better. I seriously doubt the sales guy would let me dig that far into the vehicle to find out .

We really happy otherwise with the 1958 including the manual rear hatch etc. These are the only two things it is missing. There has got to be a way. - Thank you

Welcome to the Jungle!

 

[b747mx]

Welcome to the Jungle!

Thanks

 

[Nostr0m0]

Hello All,
We are seriously considering a 1958. There are two modifications I would like to make but I can’t seem to find a service manual for viability.
1. I would like to add the manual seat extension. I think this could be accomplished by adding the manual seat extension parts and a new seat cover over the lower cushion. I am not really concerned about things matching since I will be installing seat covers all the way around.
2. We are up north and heated exterior mirrors are a must. There are enough open buttons on the lower left side of the dash that I should be able to add one. If there is a “computer” I can plug the OEM one for the LC sitting behind the dash, even better. I seriously doubt the sales guy would let me dig that far into the vehicle to find out .

We really happy otherwise with the 1958 including the manual rear hatch etc. These are the only two things it is missing. There has got to be a way. - Thank you

For heated mirrors, I would be surprised if someone doesn't start selling a kit soon. I know when I had my FJ cruiser, I got EZ View mirrors that were heated and installed them, the wiring for them ran to the wire in the wireloom by the driver's side door and spliced into the rear window defrost.

 

[b747mx]

Totally game for a kit.

 

[Blue Sky]

Totally game for a kit.

Just a heads up but there is another thread on this forum where 1958 owners think that the side view mirrors might already be heated and that the on/off is tied to the rear defrost button.

Come on Toyota, no side rear view defroster on 1958s?​

Come on Toyota, no side rear view defroster on 1958s?

Please tell me I am wrong but I just realized this morning I don't have rear side view defrosters on my 1958. Power mirrors, yep, power-folding mirrors, yep, heated wiper blade thingy, yep. Ok, totally my fault for not knowing this, but I never saw it in any written material and (wrongfully)...

www.landcruiserforum.com

 

[ultane]

Welcome to the asylum b747mx.

 

[TheBat]

Just a heads up but there is another thread on this forum where 1958 owners think that the side view mirrors might already be heated and that the on/off is tied to the rear defrost button.

Come on Toyota, no side rear view defroster on 1958s?​

Come on Toyota, no side rear view defroster on 1958s?

Please tell me I am wrong but I just realized this morning I don't have rear side view defrosters on my 1958. Power mirrors, yep, power-folding mirrors, yep, heated wiper blade thingy, yep. Ok, totally my fault for not knowing this, but I never saw it in any written material and (wrongfully)...

www.landcruiserforum.com

They're not. Ok maybe there is a slim chance that theirs are, Mine are Not.

 

[dato6966]

Mine was one of the first 1958's in Canada - I've investigated and can confirm the mirrors aren't even prewired for heat- which living in Canada heated mirrors are a must have. If a kit becomes available I'm all for it

 

[EOD Guy]

Mine was one of the first 1958's in Canada - I've investigated and can confirm the mirrors aren't even prewired for heat- which living in Canada heated mirrors are a must have. If a kit becomes available I'm all for it

Should be a easy retro fit, tying into the rear defrost circuit.

 

[Blue Sky]

They're not. Ok maybe there is a slim chance that theirs are, Mine are Not.

Yup, you are correct. I tested them today when it was 55f (13c) and raining. Side view mirrors were cold to the touch after running both front and rear defrost for 15min while driving.

Found some part numbers for the mirrors (heated). Wondering how difficult the wiring would be to splice into the rear defrost. Assuming the mirrors have the heating element attached. Come to think of it, I may only do the driver side.

Left-2024 Toyota Land Cruiser - Mirror Glass - Toyota (87961-6A570)
Right-2024 Toyota Land Cruiser - Mirror Glass - Toyota (87931-6A700)

https://parts.toyotaofnashua.com/oem-parts/toyota-2024-toyota-land-cruiser-mirror-glass-879616a570?c=Zz1ib2R5JnM9b3V0c2lkZS1taXJyb3JzJmw9NiZuPVNlYXJjaCBSZXN1bHRzJmE9dG95b3RhJm89bGFuZC1jcnVpc2VyJnk9MjAyNSZ0PTE5NTgmZT0yLTRsLWw0LWVsZWN0cmljLWdhcw%3D%3D

 

[EOD Guy]

I installed heated glass on my Taco, I ran two wires through the mirror stalk (no easy task there) through the door boot into the door wiring connector. From the other side of the connector, I spliced into the rear window defogger......... no issues.

I assume the LC would be similar.

 

[Blue Sky]

I installed heated glass on my Taco, I ran two wires through the mirror stalk (no easy task there) through the door boot into the door wiring connector. From the other side of the connector, I spliced into the rear window defogger......... no issues.

I assume the LC would be similar.

I was hoping you would get back on this thread. Thanks EOD Guy!

The big obstacle for me would be how much of the dash assembly would I have to remove to get to the rear defroster? If easier, I can run it to the front.

 

[EOD Guy]

Might be able to tap into the relay or install a relay. I would def test to make sure the relay disconnects etc........ to make sure the mirrors aren't heat 24/7.

 

[Bad1975]

After seeing the diagram the EOD Guy posted, your best chance to tap into the factory wiring is if it's pre-wired for the heated mirrors and it still might not work due to firmware or ECU differences. There is an ECU for each mirror and that CXPI is pulse-width modulated DC that operates those relays via the CANBUS.

In the past Toyota wired all vehicles with the full harness, just left out the associated wires, but I've see multiple uses of option connectors in LC250 documentation in TIS.

You could possibly tap into it the connectors at UK3 Pin 4 (Black) and run that over to E189 Pin 21 (Gray) and E191 Pin 21 (Purple). Hardest part will be tracking the connector locations down in TIS. This is unlikely to work as well as both the E189 and E191 connectors are listed as CANBUS comms connectors which makes sense since they are going to the mirror ECU.

Probably would have to go directly from UK3 Pin 4 to G3 and G28 Pin 4 while ensuring the wire going back to the mirror ECU is disconnected/removed from the connector if in place (to prevent voltage feeding in the ECU from the modification), would also need to ensure the ground is present at G3 and G28 pin 12.

Safest and easiest method would be tap power at UK3 and run that direct to the heated mirrors and run the ground to the nearest ground source.

I checked my files I don't have any of the those connector locations I listed downloaded sorry, search process in TIS sucks as you need to find the associated wire harness to track down the connector location diagram IIRC, you can pull up the connector diagram but it doesn't show location just wire coloring and what is on that wire with links to pin parts and repair procedures. You first find the the harness name and then you can find the connector and pull up the location diagram. There is probably an easier way if you have professional training??

See attached for CANBUS and CXPI connectors:

 

[EOD Guy]

The other thread covering this same subject.....

Come on Toyota, no side rear view defroster on 1958s?

Frankly I’m not seeing how ice buildup on the side mirrors is going to be a huge concern. I live in Colorado and haven’t ever had a problem with it. Frozen windshield wipers? Now that is a problem. But not the side mirrors. I have a LC LC so my mirrors heat. But I haven’t used that feature yet.

www.landcruiserforum.com

 

[Blue Sky]

After seeing the diagram the EOD Guy posted, your best chance to tap into the factory wiring is if it's pre-wired for the heated mirrors and it still might not work due to firmware or ECU differences. There is an ECU for each mirror and that CXPI is pulse-width modulated DC that operates those relays via the CANBUS.

In the past Toyota wired all vehicles with the full harness, just left out the associated wires, but I've see multiple uses of option connectors in LC250 documentation in TIS.

You could possibly tap into it the connectors at UK3 Pin 4 (Black) and run that over to E189 Pin 21 (Gray) and E191 Pin 21 (Purple). Hardest part will be tracking the connector locations down in TIS. This is unlikely to work as well as both the E189 and E191 connectors are listed as CANBUS comms connectors which makes sense since they are going to the mirror ECU.

Probably would have to go directly from UK3 Pin 4 to G3 and G28 Pin 4 while ensuring the wire going back to the mirror ECU is disconnected/removed from the connector if in place (to prevent voltage feeding in the ECU from the modification), would also need to ensure the ground is present at G3 and G28 pin 12.

Safest and easiest method would be tap power at UK3 and run that direct to the heated mirrors and run the ground to the nearest ground source.

I checked my files I don't have any of the those connector locations I listed downloaded sorry, search process in TIS sucks as you need to find the associated wire harness to track down the connector location diagram IIRC, you can pull up the connector diagram but it doesn't show location just wire coloring and what is on that wire with links to pin parts and repair procedures. You first find the the harness name and then you can find the connector and pull up the location diagram. There is probably an easier way if you have professional training??

See attached for CANBUS and CXPI connectors:

Thank you for the detailed breakdown!

Ideally, I was hoping that the harness would have been prewired with just having to plug in the connectors to the correct ports on the harness. Worst case, I thought I may be able to chase the wires from the rear defrost and splice into them.
When you stated that they communicate with CANBUS and might throw off the ECU, I realized this is beyond my abilities.

Sounds like a there was a pretty decent chance I would have created quite a mess for myself. Thanks again for keeping me from stepping in it!

The other thread covering this same subject.....

Come on Toyota, no side rear view defroster on 1958s?

Frankly I’m not seeing how ice buildup on the side mirrors is going to be a huge concern. I live in Colorado and haven’t ever had a problem with it. Frozen windshield wipers? Now that is a problem. But not the side mirrors. I have a LC LC so my mirrors heat. But I haven’t used that feature yet.

www.landcruiserforum.com

Yeah, definitely a reality check.
It's not worth the trouble for a feature I use, maybe, a couple times a year. It also occurred to me that since the mirrors can fold in, they may be more sheltered when the vehicle is parked.

Thanks again for the information but I think I'll pass on this project.

In the meantime, I'll throw an old hair dryer in the back and call it a day.

 

[EOD Guy]

Thank you for the detailed breakdown!

Ideally, I was hoping that the harness would have been prewired with just having to plug in the connectors to the correct ports on the harness. Worst case, I thought I may be able to chase the wires from the rear defrost and splice into them.
When you stated that they communicate with CANBUS and might throw off the ECU, I realized this is beyond my abilities.

Sounds like a there was a pretty decent chance I would have created quite a mess for myself. Thanks again for keeping me from stepping in it!

Yeah, definitely a reality check.
It's not worth the trouble for a feature I use, maybe, a couple times a year. It also occurred to me that since the mirrors can fold in, they may be more sheltered when the vehicle is parked.

Thanks again for the information but I think I'll pass on this project.

In the meantime, I'll throw an old hair dryer in the back and call it a day.

Very simple solution.......... Shower cap pulled over the mirror when you park for the night. Pull it off the next morning.

 

[Blue Sky]

Very simple solution.......... Shower cap pulled over the mirror when you park for the night. Pull it off the next morning.

I had a similar thought using old beanies. A shower cap never occurred to me though, interesting.

 

[ERROR504]

I had a similar thought using old beanies. A shower cap never occurred to me though, interesting.

View attachment 42200

Two reindeers banging is prolly the best beanie I have seen