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How to replace the belts on a Freightliner truck with a DD15 Engine

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General InformationDetroit Diesel DD15 engines are equipped with two serpentine, poly-V drive belts and two automatic belt tensioners. The rear belt (closest to the engine block surface) drives the alternator, the A/C compressor, and the water pump. The other, front belt drives the engine fan. Both drive belts are kept at the correct tension by a system of pulleys and a dual automatic belt tension read more

Freightliner M2/SD, change SAE J560 Trailer Cable To Combo Stop/Turn Functionality

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Applicable Vehicles Freightliner M2+ and SD+ with SAE J560 7-way trailer cable Issue The SAE J560 7-way trailer cable provides a left turn lamp circuit and a right turn lamp circuit. If not otherwise specified at time of truck order, the default functionality of these circuits is turn signal only. This provides maximum compatibility with air-braked trailers. In some applications read more

Freightliner new ultrasonic fuel level sensor information

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Applicable Vehicles Cascadia, New Cascadia, M2, Coronado, Western Star and possibly others depending on customer order preferences. Symptoms Fuel gauge reading inaccurate. Fuel gauge reading empty all the time. Fault codes for fuel level sensor. Issue The SSI Ultrasonic Fuel Level Sensor sends high frequency pulses then measures the echo in order to determine the fuel level in the tank read more

New Freightliner Cascadia, adding a day time running light or low speed interrupt switch

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Applicable Vehicles: This solution applies to all New Cascadia Vehicles. Issue: The Customer Assistance Center (CAC) has received several requests pertaining to Daytime Running Lights (DRL) operation. In most cases, the request is to add low speed DRL interrupt. Currently (4/16/2019), Canada-domiciled vehicles require continuous DRL and regulation prohibits DRL interruption at any speed. For U. read more

New Freightliner Cascadia with LED headlight, how to disable the Accent / Park function

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Applicable Vehicles: This solution applies to all New Cascadia Vehicles with LED headlights. Issue: Several requests have been submitted to the Customer Assistance Center (CAC) pertaining to Accent / Park light function change. The white colored Accent / Park light, located just above the headlights is illuminated any time the ignition switch is on. Currently (4/11/2019) there is no progra read more

How to fix 2021 Freightliner M2 rear suspension knocking

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Applicable Vehicles This document applies to Freightliner M2 Business Class used in a “Fire/Emergency” application and equipped with FTL flat leaf spring rear suspensions. Symptoms Driver of the vehicle will detect an audible popping or knocking noise from the rear suspension when turning the vehicle. Issue The FTL flat leaf spring rear suspension permits the spring pack to shift read more

How to fix a Freightliner or Western Star leaning on one side

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Applicable Vehicles:This document applies to 2010 thru 2020 model year Freightliner and Western Star chassis used in a "Truck" application and equipped with an Airliner rear suspension. PROBLEM / SYMPTOMS:  In a "Truck" application there are a number of problems that can result in a chassis lean at the Airliner rear suspension:• Unequal tire pressure side to side.• Rear read more

New Freightliner Cascadia, no electrical power from battery cable access module in cold temperatures

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Applicable Vehicles All New Cascadia equipped with a Cab Load Disconnect Switch (CLDS). Symptoms In very cold weather, if a truck has been parked outside with the CLDS turned off, the Battery Cable Access (BCA) module might not provide power to the vehicle when the CLDS is turned on. The situation is more pronounced in extreme cold temperatures experienced in the northern United States an read more

New Freightliner Cascadia P4 equipped with Racor Water Separator Filter

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Applicable Vehicles P4 New Cascadia vehicles specified with Detroit-Racor Fuel Water Separator and Adaptive Power Steering built since 10/8/2021. Symptoms Access to FWS Bowl to replace Filter is reduced due to location of a APS Wiring Bracket. Issue New Cascadia vehicles specified with Detroit – Racor Fuel Water Separators and Adaptive Power Steering (APS) may have reduced access to ser read more

Freightliner M2 Plus Fault Code 232/524000/19- ECU CPC data error

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Applicable Vehicles This Solution applies to M2 Plus vehicles built with a Cummins engine and Detroit Assurance. Symptoms Under certain driving conditions the fault code  232/524000/19- ECU CPC data error can come active intermittently. Issue There is a known issue with Fault code 232/524000/19 ECU CPC data error associated with M2+ vehicles supplied with a Cummins engine and Detroit Ass read more