01-09-15, 10:57 AM
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- Lexus IS: How to install ISF tail lights
Step by step instructions for do-it-yourself repairs
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DIY: IS-F & 2009+ Tail Light Installation
11-19-12, 08:21 AM
#34
You may have read this already, but on certain '06-'08 ISx50s there's a tab that gets in the way of 2011+ tail lights sitting flush with the trunk. If you have this problem, you can remedy it by cutting that tab or bending it backwards to make room.
11-30-13, 01:57 PM
#43
I posted this DIY earlier in a different thread, but keep seeing questions about the IS-F taillight install pop up. So, I figured I'd make a dedicated thread and will cross my fingers that people actually use search to find it henceforth. 
Anyway, here it goes:
1. You'll need your IS-F tails (obviously), the two harnesses, and a pair of turn signal bulbs (#7440). The tails and harnesses are usually sold together, but double check before you purchase. For the turn signals, I would recommend Stealth Bulbs or LEDs so you don't get the "egg yolk" effect where you see the amber bulbs behind your clear lenses.
2. You'll also need a large flathead screwdriver, a small flathead screwdriver (~2-3mm wide) and a 10mm socket wrench. There's a 10mm wrench in the little tool pack in your trunk that you can use, but it's a LOT easier with a socket.
3. Pop off all those plastic tabs holding the trunk liner in place using a flathead screwdriver. Don't be afraid to damage them, and if you do they're cheap to replace. Just place the flathead firmly into the tab and pop it out using whatever leverage you can.
4. Remove the grocery net hook using the 10mm socket or a Philips head screwdriver. After you remove the screw, just pull the hook out. There was another hook near the top of the trunk liner that I also popped out as shown in the pictures below, but it turns out you can just leave it in there.
5. Peel back the trunk liner so you can access the backside of the outer tail lights. Remember, the IS-F tail lights ONLY replace the outers, no need to touch the inners. Be careful when peeling the liner back so as not to bend it too much and create permanent creases. It's pretty resilient though and because it's carpeted any creases you do create are hardly visible.
6. Twist the bulb assembly and pull it out from the back of the tail light. There's also a tiny connector you'll have to disconnect by pinching and pulling out.
7. Remove the three nuts that hold the outer tail light assembly in place using your 10mm socket. Do NOT let the nuts fall into the abyss.
8. Pop the outer tail light assembly out. I find the easiest way to do this is to push on the 3 rods that the nuts were on to loosen it up and them use your hands to pull the assembly straight out from outside the car. There's a little clip in the corner that still holds it in place, you just have to pull hard enough until it pops free.
9. Swap the OEM harness out with the IS-F tail light one. It's a little hard to reach down to where the connector is - you have to slide a tiny flathead screwdriver in between this little gap to release the connector tab (you'll see what I mean when you get to this point). You don't squeeze but rather pop the tab out using the screwdriver and then pull at the same time. An extra set of hands here doesn't hurt.
10. Pop the new IS-F tail light assembly in.
11. Put your new turn signal bulbs in, twist it into place and reattached that smaller connector.
12. Repeat on the other side, make sure all the bulbs function, and then put everything back together.
##############################################
If you need to remove the inner tail lights (e.g. if you're upgrading your '06-'08 tail lights to 2009+), it's even easier than the outers:
1. Peel the fender liner back.
2. There are two plastic covered bolts on the side, remove them.
3. There are two other bolts on each side behind the fender liner directly behind the inners, remove just the lower of the two.
4. Disconnect the wire harness. You do this in two stages, first by disconnecting the part that attaches the harness wire to the metal part of the trunk by squeezing on the white tab and wiggling it out. Don't make the mistake I did and try squeezing it with tweezers or something and scratching the paint. It's easier with your fingers. The second step is to disconnect the male connector from the female connect by squeezing the tab and pulling.
5. Pop out the inners.
Here are some pictures that might help for the outers:
Starting to pull the liner back after removing all the hook and clips:
All the stuff you remove:
Step #5, pulling the liner back to access the backside of the outer tails:
After popping the assembly out:
Here's the clip (the white thing) I mention in step #8:
Another view:
Finished with one side:
Another angle:
A comparison of the OEM vs. IS-F tails. Notice the different pattern, which is why you need the different harness:
##############################################
I had to recite this all from memory (since I did the install a couple of months ago), but I think that's all there is to it. Just take your time, it's a pretty easy DIY (which is probably why one wasn't made until now). If you're in NorCal and need help with the install, shoot me a PM.
Anyway, here it goes:1. You'll need your IS-F tails (obviously), the two harnesses, and a pair of turn signal bulbs (#7440). The tails and harnesses are usually sold together, but double check before you purchase. For the turn signals, I would recommend Stealth Bulbs or LEDs so you don't get the "egg yolk" effect where you see the amber bulbs behind your clear lenses.
2. You'll also need a large flathead screwdriver, a small flathead screwdriver (~2-3mm wide) and a 10mm socket wrench. There's a 10mm wrench in the little tool pack in your trunk that you can use, but it's a LOT easier with a socket.
3. Pop off all those plastic tabs holding the trunk liner in place using a flathead screwdriver. Don't be afraid to damage them, and if you do they're cheap to replace. Just place the flathead firmly into the tab and pop it out using whatever leverage you can.
4. Remove the grocery net hook using the 10mm socket or a Philips head screwdriver. After you remove the screw, just pull the hook out. There was another hook near the top of the trunk liner that I also popped out as shown in the pictures below, but it turns out you can just leave it in there.
5. Peel back the trunk liner so you can access the backside of the outer tail lights. Remember, the IS-F tail lights ONLY replace the outers, no need to touch the inners. Be careful when peeling the liner back so as not to bend it too much and create permanent creases. It's pretty resilient though and because it's carpeted any creases you do create are hardly visible.
6. Twist the bulb assembly and pull it out from the back of the tail light. There's also a tiny connector you'll have to disconnect by pinching and pulling out.
7. Remove the three nuts that hold the outer tail light assembly in place using your 10mm socket. Do NOT let the nuts fall into the abyss.
8. Pop the outer tail light assembly out. I find the easiest way to do this is to push on the 3 rods that the nuts were on to loosen it up and them use your hands to pull the assembly straight out from outside the car. There's a little clip in the corner that still holds it in place, you just have to pull hard enough until it pops free.
9. Swap the OEM harness out with the IS-F tail light one. It's a little hard to reach down to where the connector is - you have to slide a tiny flathead screwdriver in between this little gap to release the connector tab (you'll see what I mean when you get to this point). You don't squeeze but rather pop the tab out using the screwdriver and then pull at the same time. An extra set of hands here doesn't hurt.
10. Pop the new IS-F tail light assembly in.
11. Put your new turn signal bulbs in, twist it into place and reattached that smaller connector.
12. Repeat on the other side, make sure all the bulbs function, and then put everything back together.
##############################################
If you need to remove the inner tail lights (e.g. if you're upgrading your '06-'08 tail lights to 2009+), it's even easier than the outers:
1. Peel the fender liner back.
2. There are two plastic covered bolts on the side, remove them.
3. There are two other bolts on each side behind the fender liner directly behind the inners, remove just the lower of the two.
4. Disconnect the wire harness. You do this in two stages, first by disconnecting the part that attaches the harness wire to the metal part of the trunk by squeezing on the white tab and wiggling it out. Don't make the mistake I did and try squeezing it with tweezers or something and scratching the paint. It's easier with your fingers. The second step is to disconnect the male connector from the female connect by squeezing the tab and pulling.
5. Pop out the inners.
Here are some pictures that might help for the outers:
Starting to pull the liner back after removing all the hook and clips:
All the stuff you remove:
Step #5, pulling the liner back to access the backside of the outer tails:
After popping the assembly out:
Here's the clip (the white thing) I mention in step #8:
Another view:
Finished with one side:
Another angle:
A comparison of the OEM vs. IS-F tails. Notice the different pattern, which is why you need the different harness:
##############################################
I had to recite this all from memory (since I did the install a couple of months ago), but I think that's all there is to it. Just take your time, it's a pretty easy DIY (which is probably why one wasn't made until now). If you're in NorCal and need help with the install, shoot me a PM.
12-19-13, 04:02 PM
#45
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Thank you for the great write up.
I need to replace the external push gadget that one pushe on to open the trunk on my GS 350, so your tips about removing the carpet lining will come in very handy. I was wondering if brute force was what was needed to remove the plastic fasteners that hold the lining on. Unscewing did not seem to work. Thank you.
One more question if I may. I need to removed the lining from the trunk lid itself to get to the electronic trunk opener mechanism I need to replace. How does one detach the couple of black "squares" (see image) that also hold the lining on?
Thank you.
I need to replace the external push gadget that one pushe on to open the trunk on my GS 350, so your tips about removing the carpet lining will come in very handy. I was wondering if brute force was what was needed to remove the plastic fasteners that hold the lining on. Unscewing did not seem to work. Thank you.
One more question if I may. I need to removed the lining from the trunk lid itself to get to the electronic trunk opener mechanism I need to replace. How does one detach the couple of black "squares" (see image) that also hold the lining on?
Thank you.