Been running perfect. No reason to have an issue nor has anything changed or repairs done, etc. Just got in it to move the car and noticed when I crank the car the red/ yellow lamps on the mirror flash alternate while cranking. Glow plug light comes on as normal but it is as if any ability to run is disable. No stumble or fire at all. Just cranks. Does this flashing red/ green while cranking indicate something?

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1996 E300D
1996 E320 Wagon 4MATIC
2003 Jetta TDI- GLS, 5-spd
1997 Passat TDI
2002 F350 Crew cab 4x4 Powerstroke
Jacobsen HR 15' cut ZTR w/ 80 HP Perkins diesel
Hustler 6' front deck with 28HP Kubota diesel