LT728

Hello,

I have a 2003 CLK320, 72K miles. I recently replaced a failing alternator in February 2018. Immediately after replacement an error code appeared in the dash, "Coolant visit workshop". The radiator fan is defaulting to the high setting due to the error. The fan turns to high when the key is turned to on and after the car is started, in both instances the fan turns to high in under 5 seconds.

All fuses and relays pulled and checked in engine bay, interior driver side foot panel, and rear trunk. Windshield washer fluid checked as well, nozzles spray as normal. The engine does not overheat, appears to stay steady around 80 degrees C. Any help would be greatly appreciated.


MB II scanner was used and it produced the below results, The order is: Code, Description, DTC Status

P2073-000 The fault code is not found in the database
P2073-000 The fault code is not found in the database
B1075 CAN communication is faulty Stored
B10E2 The obstruction sensor data are no longer current Current and stored
B1066 Roof system is not normalized Current and stored
9020 Fault in CAN communication with control unit N73(EIS [EZS] control unit). Stored
9023 Fault in CAN communication with control unit N10/2(Rear SAM control unit with fuse and relay module.)if the fault code 9024 or 9023 appears without any complaints or problems, disregard and delete it from the memory. Stored
9024 Fault in CAN communication with control unit N70(Overhead control panel control unit). if the fault code 9024 appears without any complaints or problems, disregard and delete it from the memory. Stored
9026 CAN communication is faulty Stored
9027 B1027 CAN communication is faulty. (The information (circuit 15) from control module N73(EIS [EZS] control unit) is not received.) Stored
B1028 Control module REAR SAM is not sending any data. If fault code occurs with no complaints reported and no malfunctions, erase fault memory and perform a function check. Stored
B1026 Control module EZS and SCM [MRM] are not linked via the CAN bus. If fault code occurs with no complaints reported and no malfunctions, erase fault memory and perform a function check. Stored
B1031 Control module OCP is not sending any data. If fault code occurs with no complaint reported and no malfunctions, erase fault memory and perform a function check. Stored
B1004 Computer R2/2 (left washer nozzle heater) and(or) R2/3(Right washer nozzle heater) or the line to the components has a short circuit or open circuit. OR Component R2/1 (Heated windshield washer nozzle) and (or) R2/1(washer nozzle hose heater) or the line to the components has a short circuit or open circuit. Stored
B1029 Control module AAC is not sending any data. If fault code occurs with no complaint reported and no malfunctions, erase fault memory and perform a function check. Stored
B1044 Components S41 (coolant level indicator switch) and S42(windshield washer fluid level indicator switch) have Open circuit. Stored
B1036 The input signal 'circuit 61' is not o.k. Stored
B1094 Fault in CAN communication with control unit N69/2(right front door control unit). If fault code occurs with no complaint reported and no malfunctions, erase fault memory and perform a function check. Stored
B1096 Fault in CAN communication with control unit N72/1(upper control panel unit). If fault code occurs with no complaint reported and no malfunctions, erase fault memory and perform a function check. Stored
B10A1 Fault in CAN communication with control unit N80(steering column module). If fault code occurs with no complaint reported and no malfunctions, erase fault memory and perform a function check. Stored
B1089 Fault in CAN communication with control unit A1(instrument cluster). If fault code occurs with no complaint reported and no malfunctions, erase fault memory and perform a function check. Stored
B1090 Fault in CAN communication with control unit N70(overhead control panel control unit). If fault code occurs with no complaint reported and no malfunctions, erase fault memory and perform a function check. Stored
B1095 Fault in CAN communication with control unit N10/1(Front SAM control unit with fuse and relay module). If fault code occurs with no complaint reported and no malfunctions, erase fault memory and perform a function check. Stored
B1088 Fault in CA communication with control unit N73(EIS[EZS] control unit) Stored
B1091 Fault in CAN communication with control unit N22/7(Comfort AAC pushbutton control module). If fault code occurs with no complaint reported and no malfunctions, erase fault memory and perform a function check. Stored
B1078 Fault in communication with component H3/1(alarm signal siren with additional battery) or there is a cable fault. Current and stored
B1110 The instrument cluster no longer transmits over the interior CAN databus. Status 'CAN bus OFF' Stored
B1111 Fault in CAN communication with control unit EIS. Stored
B1112 Fault in CAN communication with control unit REAR SAM. Stored
B1114 Fault in CAN communication with control unit OCP. Stored
B1115 Fault in CAN communication with control unit AAC. Stored
B1116 [Fault in CAN communication with control unit TELE AID or E-Call.] or [Fault in CAN communication with control unit Telematics platform.] Stored
B1129 Fault in CAN communication with control module COMAND or AUDIO. Stored
B1133 Control module EIS has detected undervoltage. Stored
B1138 The Brake fluid level in not o.k. Stored
B120D M21/1h1(Automatic dimming mirror) : Short circuit Stored
B120C E17/3(Left door entrance/exit lamp): Open circuit or bulb faulty Current and stored
B120D M21/2h1(automatic dimming mirror : Short circuit Stored
B120C E17/4(Right door entrance/exit lamp : Open circuit or bulb faulty Current and stored
B1852 CAN communication with module EIS is interfered. Stored
B1853 CAN communication with module SAM-REAR is interfered. Stored
B1854 CAN communication with module KIW is interfered. Stored
B1852 CAN communication with module EIS is interfered. Stored
B1853 communication with module SAM-REAR CAN is interfered. Stored
B1854 communication with module KIW CAN is interfered. Stored
B1630 Fault in CAN communication with control unit OCP. Stored

Rudeney

First of all, clear all those codes, then scan again. Many of those are likely due to low voltage.