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#1
04-21-2007, 08:12 AM
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Lights Flashing when doors lock
1985 300sd When I lock car the headlights start flashing. I can reset it with key, but after a few minutes it starts again. Can any one tell me where to start troubleshooting this problem? Thanks in advance Jack
Last edited by whunter; 04-22-2007 at 03:10 AM. 
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#2
04-21-2007, 02:38 PM
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Jack, that's a really interesting problem (easy for me to say, I know).
 I would start by asking whether the car has an alarm (factory or aftermarket). Alarms sometimes make the headlights flash along with honking the horn. A partially broken alarm might cause your problem.
__________________
 "Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970
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#3
04-21-2007, 07:34 PM
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Im not 100% sure on the late W126's that had alarms but if it was like the W124 check under the front passanger floor mats for a metal box that says becker on it.
That is the alarm system. Same thing happen to me on my 87 300D, i just disconnected the alarm system. There is 2 big plugs that plug into the box, just disconnect them and your problem should go away.
__________________
Current: 05 E320 CDI 07 GL320 CDI 08 Sprinter 05 Dodge Cummins 01 Dodge Cummins Previous 2004 E55 AMG 2002 C32 AMG (#2) 1995 E300 1978 300D 1987 300D 2002 C32 AMG(blown motor :[ 1981 300SD 1983 300SD 1987 300SDL 2002 Jetta TDI 1996 S420 1995 S500 1993 190E 2.6 1992 190E 2.3 1985 190E 2.3 5-Speed
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#4
04-22-2007, 03:12 AM
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Answer:
Quote:
http://www.peachparts.com/shopforum/showthread.php?p=1143583 Have a great day.
__________________
ASE Master Mechanic https://whunter.carrd.co/ Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 2003 Volvo V70 https://www.boldegoist.com/
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#5
04-22-2007, 07:57 PM
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Flashing Lights
The alarm system is factory as far as I know. I will check out the box under the passenger floor mat. Thanks for the help and allso telling me where the forum was discussing these issues. I am glad we have a Forum such as this that can help solve problems without having to go to a dealer and spend an arm and a leg.
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Linear Mode
