2001 Lexus ES 300 Logo
Posted on Mar 30, 2012

How to replace the ecu on a lexus 300es

Driver side headlamp is out and bulb is still good, dealership says it is the headlight control module, so where does it go?

1 Answer

Jim belluomini

Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

  • Contributor 2 Answers
  • Posted on Mar 31, 2012
Jim belluomini
Contributor
Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.

Joined: Mar 31, 2012
Answers
2
Questions
1
Helped
460
Points
4

Very simple remove the front radiator sheild it should have 6 plastic clips on it. if you dont know wat that is its the big black plastic cover right when u pop the hood. u will see a 10mm bolt on the top of the headlamp assembly remove that bolt you will also see a screw on the other side on top of the parking lamp assembly remove the srew after the screw is removed u will b able to slide out the parking assembly after that has been removed u will see one more 10mm bolt holding the headlight assembly in place remove that and the headlight assembly will slide out after it is out unplug the 3 electrical connectors from the back of the assembly remove the assembly. if u flip it over their will be four screws on the bottom of the assembly remove the four screw and take the plastic plate off u will see a steal box that is ur headlight CM remove the two electrical connectors off the box one of them goes to the headlight twist off the headlight waterproof cap and un plug.. should take you no more than 30mins

5 Related Answers

Anonymous

  • 92 Answers
  • Posted on Mar 29, 2009

SOURCE: headlights dulled

no to both questions. we have had good luck with wet sanding the plastic faces with 1500 sand paper than with polishing compound buff them back to new.

Ad
mkv0525

Mike Vincent

  • 358 Answers
  • Posted on Jun 16, 2009

SOURCE: Changing 1996 Lexus LS400 headlight bulb.

you have to remove the head lamp. there are 4 bolts that hold it in. you will have to remove ouyer marker lens first.1 screw on top and pull forward. clips hold lens pretty tight.

Anonymous

  • 11896 Answers
  • Posted on Sep 15, 2009

SOURCE: REPLACE HEADLAMP BULB 2001 LEXUS LS430

There is a clip that pries up with small flathead screwdriver. The harness and bulb are held in lens with a plastic ring that screws on and off.

Testimonial: "good info "

Anonymous

  • 1 Answer
  • Posted on Dec 24, 2009

SOURCE: how do you replace headlight on lexus ls430?

This is one of the easiest fixes you can do on your lexus...all thats needed is just unscrew the canisters' holding the lightbulbs, they look like dome fixtures encasing the HID lights...once you unscrew those, the bulbs are held in place by simple snap components that actually hold the lights in place...pull the old lamps out...unplug them, and then reverse this procedure....it took me all of 15 minutes, and a savings of $1000 to do this...

Anonymous

  • 3533 Answers
  • Posted on Mar 27, 2010

SOURCE: my driver side headlight not working replace bulb

it also could be a bad wire or ground give these websites a try www.alldatadiy.com and www.autozone.com stop by your local Lexus dealership in the parts department and they be able to print you off the pictures and diagrams you will need if all fails stop by your local library and get your hands on a Haynes auto repair manual for your car wish you the best of luck Michigan Man.

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
3answers

Why is there no power going to my drivers side headlight?

PAWEL IS A BOT. HE POSTS GENERIC ANSWERS. AND OVERLAYS NAME OF YOUR CAR. 82 GENRIC ANSWERS HIM
AND LIES ABOUT IGN SWITCH.
NOW YOUR CAR.! FACTS, ONLY, 1 CAR
LEARN TO USE THE DMM , CORRECTLY;
HEAD LAMPS ON.(SWITCH) NO KEY IS NEEDED FOR HL.
IS DRIVER LEFT OR RIGHT,? IN USA LEFT.
IS HIGH AND LOW BEAMS DEAD LEFT? No TOLD AT ALL.
PUT METER BLACK LEAD TO THE BATTERY NEG LUG
THEN PROBE RED TO ALL WIRES OF DEAD LAMP 1 BY 1.
12VDC IS GOOD 0 BAD
IF LAMP GROUND PIN READS 12VDC <<< GROUND FAILS.

LEFT LAMP USES GROUND LUG G101. IF R

CAR HAS DRL. SO DRL AND MANUAL LAMPS FAIL
HIGH , LOW , AND FLASH HIGH>? NOT TOLD
DOES ENGINE RUN? OMG NOT TOLD.
THIS CAR RUN HL RELAYS BY BCM CONTROLLER BRAIN


FUSE ARE ON THE OUTPUT OF ALL HL RELAYS
SO IF ALL FUSES INPUT(TOP) ARE DEAD,THAT MEANS
BCM IS FAILING. OR THE SWITCH TO IT.
OR FUSES BLOW TO BCM
WE SCAN THE PCM/BCM TO SE WHY.


HEAD LAMPS ON THE 4 FUSES ALL 4 RIGHT SIDE ARE
12VDC, IF NOT BCM IS MESSED UP, OR RELAY DEAD.
HE LOW BEAM RELAY RUNS BOTH SIDE
SAME WITH BEAM. A RELAY FOR IT.
DRL HOT ONLY IN DRL MODE.
DRL; HAS A SUN SENSOR (AUTO MODE)


cobalt-undefined-undefined-0.jpg BOTTOM HERE IS HEAD LAMPS.SIDE.

HEAD LAMPS ON USA WORK EVEN KEYOFF
SO DOES BCM TO DO THAT, MAIN BATTERY NOT DEAD
4helpful
4answers

2007 GMC envoy SLT low beam headlights stopped working and I'm not sure what else to try.

Cud b flaw in harness wiring from age or vibration. Mite hava module issue. Swingit into a partstore..freehelp
0helpful
2answers

Relplaced both headlights on Subaru Legacy 2011, Is this normal?

Generally, it is better to replace both at the same time, simply because the possibility of the other one following after. BUT $150.00? wow, that is not something that would void your warranty if you replace it yourself. The bulbs are as cheap as $7.00 at your local parts store. Save yourself $130.00 and replace them yourself. ^^ Good luck and hope this helps. P.S. If you are talking about the entire headlight assembly, then $150.00 is more than fare.
2helpful
1answer

2005 Lexus Rx330 Ballast problem??? First I saw my passenger side HID headlight was on and off and then mostly off. I thought the HID bulb burnt out. I bought a new one and replaced it. After I installed...

Well, we seem to have a real dilema here. I just searched the service manual for your 2005 RX330 and I cannot find any reference to a ballast for the HID headlamp bulbs. According to the wiring diagram, they are wired to the Headlamp Control Relays in Junction Block #2. (Right-hand side of the engine compartment) These relays are "Solid State", so my guess is that the balast for the HID may be built in to them. These are controlled by the Body Control Module. I would recommend scanning the body control module for fault codes before doing anything else. The first step in the diagnostic chart for the headlamp system is to perform a diagnostic systems check. There is a symptom chart to follow if there are no codes present, but if there are codes in the system, you could be shooting yourself in the foot trying to follow the symptom chart without first correcting any fault codes. This is not your fathers headlamp system - it is equipped with tracking control and automatic headlamp leveling...VERY sophisticated. Also lots of stuff that can break...this is what I call JOB-SECURITY- - LOL!
0helpful
5answers

I have a 2006 PT Cruiser that the left low beam headlamp bulb blew out; I purchased a replacement bulb and replaced it, the bulb would not light, so I then swapped the bulb from the right side with the...

This is a legitimate problem with light bulbs on Chrysler products.. The best resolution is to purchase a used module from a salvage yard to replace yours which is very much cheaper to do
0helpful
1answer

Driver side Headlight went out (condensation in light also) and dealer says $2,100 to replace - referencing an ECU? Can this be right?

wow and I thought bulbs were getting expensive!! Try an aftermarket headlamp assembly. The best bet is to research on line.
0helpful
1answer

My driver side headlight not working replace bulb and still not working1999 GS400 lexus tried the headlight module what else could it be ?

it also could be a bad wire or ground give these websites a try www.alldatadiy.com and www.autozone.com stop by your local Lexus dealership in the parts department and they be able to print you off the pictures and diagrams you will need if all fails stop by your local library and get your hands on a Haynes auto repair manual for your car wish you the best of luck Michigan Man.
2helpful
1answer

No power to left front headlamp - low beam

There are relays that control the headlights in a fuse box under the hood near the firewall.. There's also a fuse box underneath the dash on the driver's side, but can't remember if it's on the underside of the dash or beside it
0helpful
1answer

No high beam headlights 1996 crown victoria

does the flash to pass function work? That uses high beam bulbs.

If yes, I would bet $100 it's the lighting control module. Very expensive. @ $500. Can buy for $250 @ tascafordparts.com.

Sometimes on Ebay for cheap price.

--------------------------------
Lighting Control Module Principles of Operation
NOTE: Due to varying wattage ratings and resulting current draw, certain aftermarket headlamp bulbs may cause the lighting control module (LCM) to shut down the short circuit protection, resulting in the low beams becoming inoperative. Verify that the headlamp bulbs meet Ford specifications.
The lighting control module (LCM) receives inputs from the following:
  • headlamp switch
  • multifunction switch
  • photocell and amplifier
Depending on the inputs received, the LCM will command the headlamps on or off.

Power is supplied to the headlamps through lighting control module Circuit 502 (GY) and circuit protection C in the fuse junction panel. Ground is provided to the headlamp bulb and retainer (13N021) through Circuit 57 (BK).

The lighting control module is located under the instrument panel, to the right of the steering column, under the lower steering column cover.

Removal and Installation
  1. Open hood. Disconnect battery ground cable (14301).
  1. Disengage three pushpins and remove lower driver side intrument panel (04320) finish panel.
  1. Locate lighting control module above accelerator pedal.
  1. Disconnect bottom two eletrical connectors from lighting control module.
  1. Remove two screws retaining LCM to bracket and unclip from bracket.
  1. Remove lighting control module from bracket and disconnect two remaining electrical connectors.
  1. To install, reverse Removal procedure. Check lighting control module for proper operation.
---------------------------------

the module is about 6 inches lng and 4 inches wide and has 3 wire connectors.
Not finding what you are looking for?

287 views

Ask a Question

Usually answered in minutes!

Top Lexus Experts

ROBERT GARCIA
ROBERT GARCIA

Level 3 Expert

926 Answers

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

Brad Brown

Level 3 Expert

19187 Answers

Are you a Lexus Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...