1st Gen ECU Location
#1
1st Gen ECU Location
Does anyone know where the ECU is located for a first gen LS400 (1992) I took the lining out of the trunk and right below the tool kit is a black box, this box clicks when the lexus phone is used (I'm assuming this isn't the ECU, possibly a ECU for the Lexus phone?) I know it has to be in the trunk somewheres, but I'm not sure what to look for.
#2
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It's under the glovebox.
There is another panel beaneath the glovebox which pops off with a screwdriver (3 or 4 clips) and opens down to expose the ECU and some other wires.
It's really simple..wish I had a pic of mine. Someone here does I'm sure. If not I'll take one today.
There is another panel beaneath the glovebox which pops off with a screwdriver (3 or 4 clips) and opens down to expose the ECU and some other wires.
It's really simple..wish I had a pic of mine. Someone here does I'm sure. If not I'll take one today.
#3
Here's a reply I got from a Lexus Tech
I'm looking for the Cars ECU to install my ROM chip (For my remote)
The computer is on the same side as the antenna. When you take of the panel the computer is in front of the antenna assembly. Once you have founded it, disconnect the computer and there should be a single phillip head screw that you remove and you should be able to see the old chip. From there just remove and replace it with the new one.
Does this sound correct?
I think I found a pic of the ECU, tell me if this is correct
The computer is on the same side as the antenna. When you take of the panel the computer is in front of the antenna assembly. Once you have founded it, disconnect the computer and there should be a single phillip head screw that you remove and you should be able to see the old chip. From there just remove and replace it with the new one.
Does this sound correct?
I think I found a pic of the ECU, tell me if this is correct
#4
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OH that chip. Still though, there is an ECU under the glovebox.
I don't know. But. I'd like to know where the remote ECU is because mine has been broken for many years.
Dealer quoted around $400 to fix and replace.
I don't know. But. I'd like to know where the remote ECU is because mine has been broken for many years.
Dealer quoted around $400 to fix and replace.
Last edited by Lvangundy; 02-26-03 at 07:10 AM.
#6
Let's get something straight here. ECU usually abbreviates for Engine Controll Unit, but some use it to stand for Electronic Controll Unit. The picture you posted is the E(ngine)CU and it is located under the glove compartment as Lvan indicated. I have no clue as to where the remote ROM E(lectronic)CU is but I know that the theft deterrent controll unit is located on the firewall near the steering column.
dbullen: I think you should get your remote ROM straight because I don't think Lexus would put a remote ROM unit inside the E(ngine)CU. This would be a NO...NO.
dbullen: I think you should get your remote ROM straight because I don't think Lexus would put a remote ROM unit inside the E(ngine)CU. This would be a NO...NO.
#7
Originally posted by hyperopt
Let's get something straight here. ECU usually abbreviates for Engine Controll Unit, but some use it to stand for Electronic Controll Unit. The picture you posted is the E(ngine)CU and it is located under the glove compartment as Lvan indicated. I have no clue as to where the remote ROM E(lectronic)CU is but I know that the theft deterrent controll unit is located on the firewall near the steering column.
dbullen: I think you should get your remote ROM straight because I don't think Lexus would put a remote ROM unit inside the E(ngine)CU. This would be a NO...NO.
Let's get something straight here. ECU usually abbreviates for Engine Controll Unit, but some use it to stand for Electronic Controll Unit. The picture you posted is the E(ngine)CU and it is located under the glove compartment as Lvan indicated. I have no clue as to where the remote ROM E(lectronic)CU is but I know that the theft deterrent controll unit is located on the firewall near the steering column.
dbullen: I think you should get your remote ROM straight because I don't think Lexus would put a remote ROM unit inside the E(ngine)CU. This would be a NO...NO.
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#8
the electronic ECU is in the trunk on the right side if you have air suspension, but i believe it is the same for computers without it. and there is also a place for a fuse under the driver side for a phone. i believe its number 18
#9
I think he's talking about the remote entry ECU . The chip he's talking about is the old style receiver(chip) that come with the new key and preprogram to the new key to lock and unlock the door. It's on the left hand side of the trunk next to antenna motor assembly as dbullen said in the earier post.
The correct term for the engine control is ECM(Engine Control Module). The rest of the car control units can be call ECU with name in front. For example, Steering ECU, A/C ECU, Air Bag ECU, ABS ECU,etc...
The correct term for the engine control is ECM(Engine Control Module). The rest of the car control units can be call ECU with name in front. For example, Steering ECU, A/C ECU, Air Bag ECU, ABS ECU,etc...
#11
Got it all fixed up now. Here's the Pics
It was the chip right in front of the antenna housing in the trunk. Took out the ECU and there was a little spot for a chip to be placed inside, you can see from the pics
#14
Originally posted by dbullen
That's correct got a new Key with matching ECU
That's correct got a new Key with matching ECU
and...is that the same ECU to reset the brake light? Mine is still on since I replced my brakes and the brake sensors. (Note: Lexus dealer wanted $110.00 to reset the light ).
Thanks,
Dominic
#15
This is the keyless entry ECU he's talking about and nothing to do with brake light.
Which brake light are you talking about? The one on the dash that say Brake or the one that have the picture of the circle. Check in your owner's manual for the explanation of the warning light.
Which brake light are you talking about? The one on the dash that say Brake or the one that have the picture of the circle. Check in your owner's manual for the explanation of the warning light.