I just got my car back from the mechanics after having my radiator replaced...and now my headlamp on the drivers side is very dim and flickering. The turn signal indicator lamp stays on all the time for right turns. Occasionally when I'm driving, the "brights" indicator will flash, and when that happens the turn signal indicator will go off...any ideas?
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Are you talking about the headlamps? Can you operate the headlamps manually instead of auto, does it make any difference? In the past on different makes and models, I've seen headlamp intensity brighten and dim because of faulty battery cable.
The passenger side is grounding threw the drivers side. When you pull the drivers side light the other looses it ground. It is actually grounded threw the bulb. The reason it is dim. It could be the plug. Find the ground and run a new one to the bulb from the body.
Which insturment cluster does your's have ? electronic instrument cluster or standard instrument cluster !
Standard insturment cluster - speedo / odometer Speedometer/Odometer
The speedometer and odometer provides speed information based on a speed/distance pulse signal from the vehicle speed sensor (VSS). The VSS is mounted on the speedometer driven gear in the transmission.
Could be the VSS is bad .
The horn system includes the following:
steering wheel control switch harness
steering wheel pad horn switch, which is part of the driver side air bag module. For additional information, refer to Section 501-20B .
The horn is located behind the front bumper mounted to the radiator support.
Is the air bag light lit on the insturment cluster ? If it is the clock spring could be the problem . If not lit check the circuits from the horn relay .
Which headlamps don't work ? Low beams , high beams , both ?
The high beams are inoperative
GO to Pinpoint Test C .
The low beams are inoperative
GO to Pinpoint Test D .
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 headlamp system consists of:
two aerodynamic halogen headlamp bulbs and retainers
lighting control module (LCM)
circuit wiring and circuit protection
In normal operation:
With the multifunction switch in the low beam position, power is supplied by the LCM to the low beam elements through the multifunction switch.
With the multifunction switch in the high beam position (forward detent), power is supplied to the high beam elements and to the high beam indicator in the instrument cluster.
When the multifunction switch is pulled toward the steering wheel, the flash-to-pass switch (part of the multifunction switch) is closed and power is supplied to the high beam elements. When the switch is released, they return to low beam operation.
The battery saver feature of the LCM will automatically turn off the courtesy lamps, demand lamps, headlamps, or parking lamps under the following conditions:
The ignition switch is in the OFF position.
The headlamp switch is in parking lamps ON or headlamps ON positions.
After 10 minutes.
The headlamp switch is a multi-position switch.
The positions include OFF, PARK, and HEAD.
With the headlamp switch in the PARK position (first detent), a signal is supplied to the LCM which powers the front parking lamps, the tail lamps, the side marker lamps, and the license lamp.
With the headlamp switch in the HEAD position, power is supplied to the headlamps through the LCM and the multifunction switch.
The panel dim switch (part of the headlamp switch) is located above the headlamp switch. The panel dim switch operates only with the parking lamps or headlamps on.
When the panel dim switch is held in the up position, the instrument panel lighting will progressively brighten.
When the panel dim switch is held in the down position, the instrument panel lighting will progressively dim.
For additional information, refer to Section 413-00 .
Headlamps On Warning Chime
If the headlamp switch is left in either the PARK or HEAD position and the driver door is opened, the LCM will sound a headlamps on reminder chime when the following conditions occur:
The ignition switch is OFF with the ignition key out.
The driver door is ajar.
For additional information, refer to Section 413-09 .
Inspection and Verification
Verify the customer concern by operating the system.
Visually inspect for obvious signs of mechanical and electrical damage.
I am assuming from your description that the low beam operates but is very dim? The headlamp driver / relays are located in the fuse block under the hood. The most likely cause would be excessive resistance (corrosion) on the driver for the left headlamp. A simple continuity test could verify this with a volt/ohm meter. Check from correct cavity in fuse block to headlamp, resistance should be less than 0.5 ohms
first i would want to know that all the headlamps are in good working order. it kind of sounds like these are also bad bulbs. you will also need to look for good ground wires just behind the headlamp assemblies. to answere your question, YES. if things were not repaired properly and without attention to detail then you could have wiring issues. on the plus side it doesnt sound too difficult. try these items first.
If both low and high beams dim and flicker the chances are you have a poor earth connection for the headlamps. If this is happening while car is stopped, get a multimeter and check the voltage at both sides of headlamp bulb will on. One side should be 12 volts or thereabouts but steady, the other side should be zero or possible up to .2 volt depending on how good the earth is. If the earth side is varing a couple of volts, then that is you problem, a poor earth. If the input is varing, then its in the switching circuits or fuse box. Use the meter to find where.
For some reason, Toyota chooses to wire their headlamps differently than domestic cars, with dual fuses for the headlamps, and a common ground for each headlamp...The reason that the lamp was dim is the bulb was getting power thru a "backfeed" condition, due to the poor ground. The fuse may have blown due to the poor ground, also.
Check the fuse for the passenger side.It is under the hood. it may not be making good contact. wiggle it a little bit and see if it makes any difference. if not, check where the the ground wires are connected to the chasis. See if thats not the problem.