Hazard light works fine (blinks on and off) for several minutes, then simply stays on. I shut it off, turn it back on, and it works fine for another several minutes, then again stays on.

Any ideas?

__________________
14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Pull the switch, carefully disassemble and clean it of dried grease, coffee residue etc. If you have any dielectric grease hit the sliding contacts with a skim coat.

__________________
James Marriott
2003 Buick Regal
1983 300D (228k, frau Auto)
1996 Suburban K2500 (192k, 6.5 turbo diesel/4WD towmaster 10,000)
www.engineeringworks.biz
1987 300SDL junker 170k
1982 300SD junker, 265k

The blinker relay might be getting tired too.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

I had this problem, took apart and cleaned the switch a few times, eventually the relay died too. Found both inexpensively, now all is well, and inspection sticker in my window.

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12 Ford Escape 4wd

You're four times

It's hard to

more likely to

concentrate on

have an accident

two things

when you're on

at the same time.

a cell phone.

www.kiva.org It's not like there's anything wrong with feeling good, is there?

Make sure to check you blinker fluid. That is a classic sign of low blinker fluid. Like stated above check the switch, and clean it, but it sounds more like a relay issue to me.

__________________

This is your starting point..


Cleaning the Hazard Switch
by whunter
8/28/04
http://www.peachparts.com/Wikka/HazardSwitch






Have a great day.

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1983 300D
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Finally getting around to dealing with this....having a son learning to drive has a way of motivating me to fix things! As I have identical cars, I can just swap switches or relays to diagnose.

One question out of curiosity (and I'm sure ignorance): How would a dirty switch account for the symptom I describe (blinking for a few minutes then staying on)? Doesn't the switch simply complete the circuit? Doesn't a failing relay more likely account for the symptom?

Thanks.

__________________
14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

More than likely a relay. But in some models the relay was built into the switch, so it might be a case of 6 of one/half-dozen of another regarding the advice to clean the switch.

It was the relay. Swapped it out and all is well.

__________________
14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife