Question about 2004 Lexus RX 330

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No power to left front headlamp - low beam

Low beam headlight left front side has no power. where are fuses (precisely) located for headlights ?If fuses are OK what is next step ?
Have new bulbs and tested for power with beckman senser - have power to right front headlamp when switching to lights on mode but not left.

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  • Anonymous Mar 19, 2014

    No power to rt. headlite bulb.
    New Relay. Fuses tested OK.

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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

Posted on Aug 12, 2009

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Posted on Jan 02, 2017

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2007 chev sub head lights wont turn on


Do you know anything about automotive electronics ? Electronic control modules .
Headlamp ON/OFF control is determined by the body control module (BCM) by a signal on the headlamp switch on input circuit when the headlamp switch is in the HEAD position. When the headlamp switch is in the AUTO position, the BCM determines headlamps ON/OFF by the voltage from the ambient light sensor.
If the headlight switch is left in the ON position, the inadvertent power control feature will turn OFF the headlights approximately 10 minutes after the ignition switch is turned to the OFF position. If the driver places the headlight switch in the ON position after the ignition switch has been turned OFF, or if the ignition switch is in the ACCY position, the headlights will remain ON until turned OFF or the battery runs dead.
The high beam indicator is illuminated when the instrument cluster receives a GMLAN serial data message from the BCM that the high beams are illuminated.
High Beams
The high beam headlamps receive voltage from the headlamp high relay located in the underhood fuse block. The BCM controls the relay on the headlamp high beam relay control circuit. High beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is grounded, the BCM grounds the headlamp high beam relay control circuit, illuminating the high beam headlamps. The right and left high beam circuits are independent and are fused independently in the underhood fuse block.
Low Beams - Standard
The low beam headlamps receive voltage from the headlamp low beam relay located in the underhood fuse block. The BCM controls the relay on the headlamp low beam relay control circuit. Low beam control is determined by a signal on the headlamp dimmer switch signal circuit from the multifunction switch. When the headlamp dimmer switch signal circuit is open, the BCM grounds the headlamp low beam relay control circuit, illuminating the low beam headlamps. The right and left low beam circuits are independent are fused independently in the underhood fuse block.

Hooking up a factory scan tool an checking DTC'S - diagnostic trouble codes would be the very first step in trouble shooting this problem .
DTC B257A 00: Headlamp Switch Input Signal Mismatch
DTC 2575 00: Headlamp Control Circuit

Jun 30, 2017 | Cars & Trucks

1 Answer

98 cad deville headlights stay on headlight & twilight sentinel switch is off along with the ign. i'm stumped can you help. Ted


Did you check the high/ low beam headlamp relay ? Stuck contacts in side relay .Plus headlamp relay an DRL relay .All are located in the underhood relay center .
The headlamps are controlled by the body control module (PZM). The battery positive voltage (B+) is applied at all times through the HDLPS fuse at the switch side of the headlamp relay via CKT 340 (ORN).
Battery positive voltage (B+) is also applied at all times through the RADIO/PHONE fuse to the coil side of the high/low beam headlight relay via CKT 40 (ORN/BLK). Both relays are controlled by the PZM at separate output cavities.

When the headlamp switch is in the HEAD position, the instrument cluster headlamp switch input is grounded through CKT 10 (YEL) and the headlamp switch. The instrument cluster sends a request through the Class 2 serial data line to the BCM in order to active the low beam headlamps. The BCM supplies positive battery voltage (B +) to the coil side of the headlamp relay via CKT 352 (WHT). The coil receives ground through the headlamp switch via CKT 10 (YEL). The coil of the headlamp relay is then energized, closing the switch contacts. Battery positive voltage (B +) is then applied through the high/low beam headlamp relay via CKT 1346 (LT BLU) and the L HDLP LO fuse and R HDLP LO fuse via CKT 12 (TAN) to the left and the right low beam headlamps respectively.
This may sound pretty complex .
1
Was the Headlights System Check performed?
--
YES - Go to Step 2
NO - Go to Headlight System Check
2
Are the park lamps also on?
--
YES - Go to Step 3
NO - Go to Step 13
3
Connect a Scan Tool to the data link connector (DLC).
Inspect the IPC headlamp switch input.
Does the headlamp switch operate properly?
--
YES - Go to Step 4
NO - Go to Step 10
4
Disconnect the instrument cluster (IPC) connector C3.
Do the headlamps and park lamps turn off?
--
YES - Go to Step 5
NO - Go to Step 6
5
Replace the instrument cluster (IPC). Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.
Is the repair complete?
--
Go to Headlight System Check
Is the repair complete?

6
Disconnect the body control module (PZM) connector C2.
Do the headlamps and park lamps turn off?
--
Go to Step 7
Go to Step 8
7
Replace the body control module (PZM). Refer to Body Control Module Replacement in Body Control System.
Is the repair complete?
--
Go to Headlight System Check
--

Your best bet is to take it to the dealer .

Mar 18, 2016 | Cars & Trucks

2 Answers

Why doesnt headlight work on low beam left side?


Bulb may be no good as in headlight bulbs one filament can go leaving only either low beam or high beam operational on one headlight so change the bulb first on that side other than that could be power related

Apr 17, 2015 | 1999 Volkswagen Beetle

2 Answers

I have a 1994 geo metro. The headlights went out. I checked the fuses. They were ok. The ground wire in the under dash fuse box looked discolored. I made a ground and the left side head light came on...


On these cars the headlights get power from a right and left fuse and the headlight / dimmer switches provide the ground circuit. Both headlights are connected to one ground wire for high and one for low beam. So if one works and the other does not, the problem should be in the wiring before the headlight switch. Red is for high beam and red-white is for low beam. You should be able to jumper the red-white wire on the right headlight and make the low beam circuit for both sides work to test it.

Jan 22, 2014 | Geo Cars & Trucks

1 Answer

Fuse box layout for 2005 honda crv


cb2ea278-0e05-4927-a52c-891cd4b1e571.jpg
No. Amps Circuits Protected 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38 7.5
15
10
7.5
(15)
(20)
_
10
7.5
7.5
10
10
10
7.5
7.5
10
10
20
15
7.5
20
_
_
(20)
20
20
(20)
15
15
20
(15)
20
20
7.5
7.5
10
7.5
30 Power Window Relay
Fuel Pump
ACG
ABS/VSA
Heated Seats*
Front Fog Lights*
Not used
Rear Wiper
ODS (Occupant Detection System)
Meter
SRS
Right Headlight High Beam
Left Headlight High Beam
Small Light (Interior)
Small Light (Exterior)
Right Headlight Low Beam
Left Headlight Low Beam
Main Headlight High Beam
Small Lights MAIN
TPMS
Headlight Low Beam
Not used
Not used
Moonroof*
Door Lock
Front Left Power Window
HAC Option
Rear Accessory Socket
Accessory
Front Right Power Window
Accessory Power Socket on the Center Table*
Rear Right Power Window
Rear Left power window
ACC Radio
ACC Key lock
HAC
Daytime Running Lights
Front Wiper * If equipped

Dec 06, 2013 | 2005 Honda CR-V

2 Answers

2003 GMC Envoy low beam head lights will not come on. The bulbs are not blown, fuse's ok, no power coming to the head light connector. minimal power to the fuse compartment with fuse removed. 9 to 10...


The problem is a Headlight module. Fuse box under the hood has two black modules side by side, the one on your right is the headlight module the one on the left is the fan module. Try swapping them, if the headlights work replace bad module, don't drive vehicle with the bad module in the fan slot. Mine kept going bad because I had a high intensity bulb on one side.

Oct 02, 2011 | 2003 GMC Envoy

1 Answer

Where is the headlight fuse location for 2000 stype jag


Hello Imntbll9,
There are 3 different fuse boxes in the 2001 Jaguar S Type vehicle and all of them are on the passenger side of the vehicle. The First One is called "Front Power Distribution Box" and is located under the hood on the passenger side of the engine next to the generator. The Second One is called "Primary Junction Box" and is located in the passenger foot area near the door jam. The
Third One is called "Rear Power Distribution box" and is located in the trunk of the vehicle next to the battery. These are the three places in the vehicle you will find the fuse boxes. The headlight fuse is in the "Front Power Distribution Box" and if you were to stand on the side of the car next to the right front tire and look down at the Front Power Distribution Box #7 in the middle farthest away from you on the box should be the Front Fog Lamp Relay. From here there should be a diagram on the box to let you know exactly which fuse will be the headlights such as high beam and low beam and from there it should give its exact location and color of the fuse as well as the number of the fuse fore example such as blue 15 etc... I do hope this will help you. Thank you j_berry06

Sep 01, 2011 | 2001 Jaguar S-Type

1 Answer

Translating japanese to english on fuse box


is located under the dashboard on the driver's side. The fuse label is attached under the steering column. If something electrical in your vehicle stops working, check for a blown fuse first. Below table outlines detail fuse number, its ampere and circuits protected. honda-crv-interior-fuse-diagram-thumb.png
No.
Amps
Circuits Protected
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38
7.5 15 10 7.5 (15) (20) _ 10 7.5 7.5 10 10 10 7.5 7.5 10 10 20 15 7.5 20 _ _ (20) 20 20 (20) 15 15 20 (15) 20 20 7.5 7.5 10 7.5 30
Power Window Relay Fuel Pump ACG ABS/VSA Heated Seats* Front Fog Lights* Not used Rear Wiper ODS (Occupant Detection System) Meter SRS Right Headlight High Beam Left Headlight High Beam Small Light (Interior) Small Light (Exterior) Right Headlight Low Beam Left Headlight Low Beam Main Headlight High Beam Small Lights MAIN TPMS Headlight Low Beam Not used Not used Moonroof* Door Lock Front Left Power Window HAC Option Rear Accessory Socket Accessory Front Right Power Window Accessory Power Socket on the Center Table* Rear Right Power Window Rear Left power window ACC Radio ACC Key lock HAC Daytime Running Lights Front Wiper

Dec 13, 2010 | 1997 Honda CR-V

2 Answers

Audi A4 2002 Low beams & Right front turn signal stopped working


For Audi A4 the fuse box is located on the left side of dashboard behind a plastic cover (for left hand steering wheel vehicle). On inner face of the plastic cover you will find the fuse diagram.
First fuse on first row from left upper corner is Fuse Nr.20 = F20 (15A) - RH headlamp low beam, headlamp adjustment.
First fuse on second row from left upper corner is Fuse Nr.21 = F21 (15A) - LH headlamp low beam, headlamp adjustment.

Feb 15, 2010 | 2002 Audi A4

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