I started the car yesterday and the engine fault light came on. Car runs normaly, only problem has been that I´m not able to check Adblue level. It has been really cold outside (-5 to -18 degrees) lately and the car battery has been in poor condition.
I took the car to a warm warehouse and charged the battery, but still the fault code list huge and have try to clear them but no success.

Would there be any ideas where the fault is?

============1==============
U0101(FA)
Raw code: C101FA
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Data bus, transmission control module (TCM) - no communication
Mercedes-Benz: Lost Communication with TCM

============2==============
U0101(FF)
Raw code: C101FF
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Data bus, transmission control module (TCM) - no communication
Mercedes-Benz: Lost Communication with TCM

============3==============
U105C(FC)
Raw code: D05CFC
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed

============4==============
U045A(E3)
Raw code: C45AE3
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Invalid data received from parking aid control module A

============5==============
U1444(E1)
Raw code: D444E1
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed

============6==============
U0100(FA)
Raw code: C100FA
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Data bus, engine control module (ECM) A - no communication
Mercedes-Benz: Lost Communication with ECM/PCM A

============7==============
U0100(FD)
Raw code: C100FD
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Data bus, engine control module (ECM) A - no communication
Mercedes-Benz: Lost Communication with ECM/PCM A

============8==============
U045A(E2)
Raw code: C45AE2
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Invalid data received from parking aid control module A

============9==============
C053B(FE)
Raw code: 453BFE
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed

============10==============
U105C(FB)
Raw code: D05CFB
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed

============11==============
U105C(FA)
Raw code: D05CFA
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed

============12==============
U045A(FF)
Raw code: C45AFF
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Invalid data received from parking aid control module A

============13==============
U045A(FB)
Raw code: C45AFB
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Invalid data received from parking aid control module A

============14==============
U045A(E0)
Raw code: C45AE0
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Invalid data received from parking aid control module A

============15==============
U045A(FD)
Raw code: C45AFD
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Invalid data received from parking aid control module A

============16==============
U045A(FC)
Raw code: C45AFC
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Invalid data received from parking aid control module A

============17==============
U045A(E5)
Raw code: C45AE5
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Invalid data received from parking aid control module A

============18==============
U0420(E1)
Raw code: C420E1
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Invalid data received - power steering control module

============19==============
U0420(E0)
Raw code: C420E0
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Invalid data received - power steering control module

============20==============
U0420(FF)
Raw code: C420FF
ECU: 7EA[Archive (inactive)]
Status: Pending, Confirmed
OBDII: Invalid data received - power steering control module

============21==============
P068B(00)
Raw code: 068B00
ECU: 7ED[Archive (inactive)]
Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear
OBDII: Engine control (EC) relay - shut-off delay

============22==============
U0164(87)
Raw code: C16487
ECU: 7ED[Archive (inactive)]
Status: Confirmed, Test failed since last DTC clear
OBDII: Data bus, AC control module - no communication

============23==============
P008A(00)
Raw code: 008A00
ECU: 7EB[Archive (inactive)]
Status: Pending, Confirmed, Test failed since last DTC clear, Test not completed during this operation cycle
OBDII: Low pressure fuel system - pressure too low

============24==============
P0627(00)
Raw code: 062700
ECU: 7EB[Archive (inactive)]
Status: Test failed since last DTC clear
OBDII: Fuel pump (FP) control - open circuit

============25==============
U0155(31)
Raw code: C15531
ECU: Transmission control unit[Archive (inactive)]
Status: Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear
OBDII: Data bus, instrumentation control module - no communication

============26==============
P0606(00)
Raw code: 060600
ECU: Transmission control unit[Archive (inactive)]
Status: Pending, Confirmed, Test failed since last DTC clear
OBDII: Engine control module (ECM)/powertrain control module (PCM) - processor fault
Mercedes-Benz: PCM Processor Fault

============27==============
U0126(00)
Raw code: C12600
ECU: Transmission control unit[Archive (inactive)]
Status: Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear
OBDII: Data bus, steering position sensor control module - no communication

============28==============
U0146(00)
Raw code: C14600
ECU: Transmission control unit[Archive (inactive)]
Status: Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear
OBDII: Data bus, gateway A - no communication

============29==============
U0121(00)
Raw code: C12100
ECU: Transmission control unit[Archive (inactive)]
Status: Test failed (current drive cycle), Pending, Test failed since last DTC clear
OBDII: Data bus, anti-lock brake system (ABS) control module - no communication

============30==============
U0100(00)
Raw code: C10000
ECU: Transmission control unit[Archive (inactive)]
Status: Pending, Test failed since last DTC clear
OBDII: Data bus, engine control module (ECM) A - no communication
Mercedes-Benz: Lost Communication with ECM/PCM A

============31==============
U0141(00)
Raw code: C14100
ECU: Transmission control unit[Archive (inactive)]
Status: Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear
OBDII: Data bus, body control module (BCM) A - no communication

============32==============
P042F(71)
Raw code: 042F71
ECU: Engine control unit[Archive (inactive)]
Status: Confirmed, Test failed since last DTC clear
OBDII: Exhaust gas recirculation (EGR) valve actuator A - actuator stuck closed

============33==============
P2463(09)
Raw code: 246309
ECU: Engine control unit[Archive (inactive)]
Status: Confirmed, Test failed since last DTC clear
OBDII: Diesel particulate filter (DPF) - DPF restricted

============34==============
P0336(64)
Raw code: 033664
ECU: Engine control unit[Archive (inactive)]
Status: Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear
OBDII: Crankshaft position (CKP) sensor - range/performance problem

============35==============
P13E7(FD)
Raw code: 13E7FD
ECU: Engine control unit[Archive (inactive)]
Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear

============36==============
P220F(77)
Raw code: 220F77
ECU: Engine control unit[Archive (inactive)]
Status: Pending, Confirmed, Test failed since last DTC clear

============37==============
P220E(77)
Raw code: 220E77
ECU: Engine control unit[Archive (inactive)]
Status: Pending, Confirmed, Test failed since last DTC clear

============38==============
P229F(91)
Raw code: 229F91
ECU: Engine control unit[Archive (inactive)]
Status: Test failed, Confirmed, Test failed since last DTC clear, Test not completed during this operation cycle
OBDII: Nitrogen oxides (NOx) sensor 2, bank 1 - circuit range/performance

============39==============
P204F(96)
Raw code: 204F96
ECU: Engine control unit
Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear
OBDII: Reductant system, bank 1 - performance problem

============40==============
P13DF(09)
Raw code: 13DF09
ECU: Engine control unit
Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear, Warning indicator requested

============41==============
P1403(00)
Raw code: 140300
ECU: Engine control unit
Status: Test failed, Test failed (current drive cycle), Pending, Confirmed, Test failed since last DTC clear
OBDII: DPFE Sensor Hoses Reversed

============42==============
P20B9
Raw code: 20B9
ECU: 7EC
Status: Pending
OBDII: Reductant heater control A - open circuit

============43==============
P20BA
Raw code: 20BA
ECU: 7EC
Status: Pending
OBDII: Reductant heater control A - circuit performance problem

============44==============
P13DF
Raw code: 13DF
ECU: Engine control unit
Status: Pending

============45==============
P20B9
Raw code: 20B9
ECU: 7EC
Status: Confirmed
OBDII: Reductant heater control A - open circuit

============46==============
P13DF
Raw code: 13DF
ECU: Engine control unit
Status: Confirmed

 

You can't delete them because they are not active only pending.

 

Which OBD tool are you using to clear the codes? and did you clear the codes while the engine is running?

 

This happened to me after messing with fuses inside the cabin. I missed a fuse putting them all back. Car ran, but lit up like a christmas tree. The fan was running high too. When I got out of the car, the problem was on the ground, a single fuse I missed somehow. Put it back in, and all was well. Guessing you have the same fuse out, that I failed to put in. Hoping it is that simple anyway.

 

 

Clear all the codes and rescan after you have driven the vehicle. Based on the errors, it looks like there is an issue with one or more of the CAN networks. Possibly a module, a corroded connector, or a break in the wiring.

 

You can't remove archived messages if you don't have the right scan tool. You can read codes in most and remove service related codes but you can't remove archived codes. These codes are stored for future reference in the modules however if the car is running normally, you can ignore the codes.