Das Glimmerblinken for the light switch,Der Drizzleflippen for wiper switch,
Die Warmercougher for choke,
Das Schmokegedunka for ashtray,
and Der Puttersparken for the ignition.
http://www.bugstories.com/viewtopic.php?t=5&sid=91ea60b6a46219a6a37b865d395fc7e6
I love this kind of humor! I first saw it in April at the Coronado car show (last photo of the set http://justacarguy.blogspot.com/2008/04/cool-stuff-i-found-at-coronado-car-show.html ) in this car http://justacarguy.blogspot.com/2008/04/1951-mercedes-170da-in-afrika-corps.html
or in German...
Das Glimmerblinken" (für Lichtschalter),
"Das Drizzleflippen" (für den Scheibenwischer)
, "Die Warmercougher" (für Starthilfezugknopf),
"Das Schmokegedunka" (Ascher)
oder "Der Puttersparken" (für Zündung)
http://wissen.spiegel.de/wissen/dokument/dokument.html?id=46272808&top=SPIEGEL
And I found some new ones that have been invented
1. Turn signals Winkenblinken
2. Windshield wipers Drizzleflippen
3. Ashtray Schmokendunken
4. Horn Ferroadhags
5. Trunk Bundledumpen
6. Spare tire Rollinknue
7. Glove compartment Ferheidenschitt
8. Rearview mirror Schpottinbaach
9. Fender Dentenruen
10. Chrome trim Doughferflashen
11. Engine compartment Rhorensump
12. Exhaust pipe Schtinkenhose
13. Window Glazzenhol
14. Speedometer Zeumklok
15. Gas gauge Neuzafuel
16. Radio Hollernbachs
17. Antenna Grabbentunz
found at http://www.writers-network.com/index.cgi?m=1&view=96588