2007/57 C220CDi Sport rear right light cluster does not work, bulbs and fuses are fine, reset after restarting ignition first time, did not reset this time

WE HAVE NO MANUALS IN USA FOR INDIA ! zip ,zero, nada.
not told you at, all does the other 100 things on the car work]?
car drives day and night OKAY>?
heater blower work? heard and felt blow.?
head lamps work on low and high beams?
?
radio works.?
blinker turns signals work.
reverse lamps work.

my guess is car has BCM that is sick.
so we SCAN the PCM/BCM at the OBD2 DLC scan port and it tells me BCM errors.
you said fuses are good but there are vast fuses now on a car even 50 fuses, in engine bay and 1or 2 fuse boxes in the cab.
the glove box users guide answers where they are;.
if battery voltage drops below 10vdc, the BCM will go crazy.
when engine runs the Battery/charge./Gen lamp must not glow,
right? seen in the IP cluster,

Circuit/System Description
Ground is applied at all times at G201 to the turn signal/multifunction switch. The turn signal lamps may only be activated with the ignition switch in the ON or START position. When the turn signal/multifunction switch is placed in either the TURN RIGHT or TURN LEFT position, ground is applied to the body control module (BCM) through either the right turn or left turn signal switch signal circuit. The BCM then applies a pulsating voltage to the front and rear turn signal lamps through their respective control circuits.
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Did you check the RT STOP TRN fuse 15amp insturment panel fuse box.
Fuse Block - I/P
Left of the I/P behind the side trim panel
If the fuse is good , you could have a wiring problem or the BCM is bad .

More than likely its bulbs .

Do you have any mileage programmer, use the to reset the dash system.

Replace right rear tail light bulb holder. Bad ground.

the light in th DASH-BOARD IS out, if you hear clicking & outside is click-g,theres not a fuse,for signals, there is a flasher-relay chk under dash or by th kick-panel or next to FUSE-CLUSTER(BOX), HOPE this helps, good-luck...

dirty corroded ground either at wire to body or bulb socket where bulb is inserted look for dirt and corrosion.If available use a noid light and a brick to apply brakes to check for power at bulb socket

Fuses: Fuse arrangement in fuse panel, behind instrument cluster, left
Fuse Arrangement In Fuse Panel

1 - Heated washer jets 5A 2 - Turn signals 10A 3 - Headlight washer (relay), illumination for glove
compartment, climate control, Automatic Transmission, instrument cluster 5A 4 - License plate light 5A 5 - Instrument cluster, seat heating, test connection
for cruise control, bulb monitor for auto-check display, Automatic Transmission display, switch
lighting, mirror switches and actuators, airbag
warning light, outside temperature indicator,
climate control 10A 6 - Central locking system 5A 7 - Anti-lock brake system (ABS) 10A 8 - Vacant 9 - Mirror heating 10A 10 - Vacant 11 - Cruise control (Automatic Transmission) 5A 12 - On board diagnostic system 10A 13 - Brake lights 10A 14 - Interior lights, reading lights, anti-theft alarm system, vanity mirror 10A 15 - Instrument cluster, power windows, climate control, automatic transmission 10A 16 - Anti-lock brake system (ABS), Anti-Slip Regulation (ASR) 5A 17 - Heated door locks 10A 18 - High-beam, right 10A 19 - High-beam, left 10A 20 - Low-beam, right 15A 21 - Low-beam, left 15A 22 - Side marker and tail light, right 5A 23 - Side marker and tail light, left 5A 24 - Wiper and washer system 25A 25 - Blower for heating, climate control 30A 26 - Rear window defogger, mirror heating 30A 27 - Rear window wiper 15A 28 - Fuel Pump 15A 29 - Engine timing 30A 30 - Sun roof 20A 31 - Tail lights, cruise control, automatic transmission 15A 32 - Engine timing 20A 33 - Cigarette lighter 15A 34 - Engine timing 15A 35 - Trailer recptacle 30A 36 - Fog lights 15A 37 - Radio 20A 38 - Luggage compartment light, central locking system 15A 39 - Emergency flasher system 15A 40 - Horn 25A 41 - Anti-lock brake system (ABS) 25A 42 - Vacant 43 - Vacant

feed wire for the lights may have failed or the circuit on the board may have gone. if you remove the cluster you can put a supply to the bulb circuit (carefully) and check if it is the circuit. If it's ok you can run a new feed to the cluster from your lights. Job done.

Rear lights are double filament bulbs one side for the lights other side for the brake/turn signals so it still may be a bulb. Do u have a test light or volt meter you can check to make sure u have power there when brakes or turn signals are activated. Or just try another bulb.