Mercedes Benz repair: Turn Signal Flasher on an 82 300SD, mercedes benz 300sd, hazard flasher

Question
Mr. Hunter,

My friend recently bought a 82 300 SD (126.120) that has turn
signal problems.  The flashers work intermittently--both sides.  
When switched on, the lights just stay on and won't flash.  

Does the flasher relay sound like the problem?  If so, where is
the relay located?  

Thanks for patiently answering all of my dumb questions.

RSCarey

Answer
The most common problem on a W126 300SD is the hazard light switch, you can clean it with caution or buy a new one.
If the relay is bad, it is behind the instrument cluster, to the left of center, you will need to buy or make special tools for removing the instrument cluster.

Cleaning the Hazard Switch
http://www.mercedesshop.com/Wikka/HazardSwitch

Special Mercedes Benz tools links:
http://www.samstagsales.com/mercedes.htm
Part #140 589 02 33 00 Instrument Cluster Pull hooks, Wiha , Germany, For the newer cars. 182mm long. Set of 2. For Chassis 124, 126, 129, 140, 168, 170, 201, 202,  208, 210, 463.   $24.99

PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1982 Mercedes Benz 300SD
Part: Hazard Flasher Switch
P3030-11834 Hazard Flasher Switch Hella IN STOCK $22.05  

http://catalog.eautopartscatalog.com/mercedesshop/sophio/wizard.jsp?partner=merc...

PART NUMBER SEARCH RESULTS WITH PRICES
Vehicle 1982 Mercedes Benz 300SD
Part: Turn Signal Relay
 Note:  Hazard warning
P2066-11838 Turn Signal Relay IN STOCK $42.43  

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