Testimonial: "the indication light on the dashboard would turn on, usually comes on, while the ignition is on with no engine. It honks just fine, expect that the honk will go off continuously, when I flash the light beams with the light switch."
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It is normal that when you select high beam that the two high beam lights come on and the low beams switch off. the light position should show high beam
It goes off on low beam when the high beam lights go off and the low beams light up
If the light is reversed then check the wiring to the light
You didn't mention what car it is but if it has a light module then the problem may be in it.
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.
If the bulbs flash when you unlock the vehicle, then they are likely not the issue. My guess is the relay contacts are dirty. Just because a relay clicks, it doesn't mean that it is passing current through the contacts. Try and swap the relay with another of the exact same part number. There's usually another available...ie the horn relay, fog lamp etc..
Your running lights which come on when you are in drive should be the ones flashing when you use the key FOB to lock or unlock vehicle not your head lights. Although unusual maybe both low beam head lights are burnt out or a bad ground, that the only thing that makes sense to me.
Go to Autozone.com for a free fusebox layout and chassis wiring diagram. Just register your car on the site and you can get this info.
You are probably looking at a high beam relay or the stalk switch. If you look at the wiring diagram, the flash to pass circuit likely bypasses the Relay for the high beams. Since the Relay is cheaper than the stalk, try switching the horn relay into the position of the highbeam Relay to test.
You can try to may the horn work with the switched relay or do it with the lights. Only switch the Relays if they have the same part #. If the relays are good, the stalk should be bad.
When you switch from High to Low beams, do the lights go out, or continue, in the "High" beam position??? If they go go, the transfer switch, that changes the high/low beam mode is working. The most likely problem, is that the Low Beam filaments are both burned out. Some, on original equipment, never changed, can burn out within days/weeks of each other. Could be that.
I have the same problem and I've tried two fixes so far and neither has worked.
- I replaced the daytime running light module and that didn't work
- I replaced the trun signal/hazard/light switch and that didn's work
I've had one comment that it could be a ground issue.
hope this saves you spending money on "fixes" that don't solve the problem