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Bulb failure warning but working

Old 11-30-2018, 06:35 PM
paflyboy55's Avatar
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Default Bulb failure warning but working

I have an 01 and the "bulb failure dipped beam" warning light flashes intermittently but all headlights are working. Anyone have any ideas?
Old 12-01-2018, 02:59 PM
Georgeandkira's Avatar
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I have only suggestions with no guarantees. If it was my car i'd....
1) Unplug both low (dipped) beams taking note of how strongly the spade connector bites onto the lamps blades. This car uses H7 low beams, I presume.

2) If you feel slight resistance to your pull, crack the plug's plastic completely away and crimp the female's curled element slightly with pliers.
Don't crush down on them as you must be able to get the connector back on. Go incrementally so you don't over do it.
You don't need the H7's plug to be intact as the connector is straight and stiff enough so the wires will never touch (short out).
I've done this to several S/V70's without problem.

3) Always use dielectric grease on automotive lamps as it reduces resistance and heat.

4) If, after addressing the solidity of your contacts, these warnings persist, consider replacing both lamps with a known matched pair.
You have the option of measuring each bulb's resistance to see if they're close. In most cases this method will only reveal grossly mismatched lamps.
A good quality electric meter is needed here.

Good luck
Old 12-03-2018, 07:37 PM
paflyboy55's Avatar
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Thanks George, I took the covers off the back of each bulb cleaned the spade connectors and sprayed some pb on them. All working fine now.
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