# Service bulletin 18\-045\-20 REV. A

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10181637
- Published by NHTSA: 2020\-10\-26
- Manufacturer's number: 18\-045\-20 REV. A
- Manufacturer's date: 2020\-09\-29
- NHTSA component: POWER TRAIN

## NHTSA's summary

Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience one or more of the following conditions: Reduced battery life. Intermittent Engine Stop/Start \(ESS\) operation.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10181637-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10181637-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Transmission and driveline

## Vehicles listed

- 2020 JEEP COMPASS

## Other bulletins for the same vehicles and component

- [9100776](/bulletins/11030018.md), 2026-03-13, Service bulletin: POWER TRAIN. Before replacing the RDM, please be aware that NVH from differential gears is typical and within the acceptable limits. Do not replace RDM for NVH issue.
- [21\-040\-25](/bulletins/11024056.md), 2025-10-08, Service bulletin: POWER TRAIN. 948TE Transmission Reaction Shaft Service Bushing Kit Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination and the vehicle may exhibit/set the following Diagnostic Trouble Code \(DTC\): ● P1DB7\-00 \- Torque Converter Clutch Performance.
- [09\-005\-25](/bulletins/11015895.md), 2025-03-25, Service bulletin: ENGINE; POWER TRAIN. "Various Models \- Engine Valley Cap \(Flywheel Side\) \- Oil Leakage \- Service Solution Customers may experience the following: ● Oil leaks from the engine compartment, engine/transmission coupling. This bulletin supersedes Technical Service Bulletin \(TSB\) 09\-021\-24, date of issue November 23, 2024, which should be removed from your files. All revisions are highlighted with \*\*asterisks\*\* and include new Labor Times."
- [1806023](/bulletins/10239949.md), 2023-07-31, Service bulletin: ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination.
- [18\-010\-23](/bulletins/10231808.md), 2023-02-13, Service bulletin: ELECTRICAL SYSTEM; FUEL SYSTEM, GASOLINE; FUEL SYSTEM, DIESEL; POWER TRAIN; EXTERIOR LIGHTING; BACK OVER PREVENTION. Flash: Powertrain Control Module \(PCM\) Updates Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes \(DTC\)s: P24D1\-00 \- Particulate Matter Sensor Regeneration Incomplete. \(RSU VINs Only\). NOTE: This software update will help prevent P24D1\-00 from setting. All unsold vehicles that are part of the RSU must be updated. If P24D1\-00 sets on a sold vehicle, this software update will not correct this DTC. Refer to all applicable published service bulletins for detailed repair procedures and labor times regarding this DTC. P2002\-00 \- Diesel Particulate Filter \(DPF\) Efficiency based on Particulate Matter \(PM\) sensor monitoring. NOTE: If DTC P2002 is present it will require DPF and PM sensor replacement. Refer to all applicable published service bulletins for detailed repair procedures and labor times regarding Diesel Particulate Matter Sensor \(DPM\) replacement. \*\*P24AE\-00 \- Particulate Matter Sensor Circuit. P24B0\-00 \- Particulate Matter Sensor Circuit Low. P24B1\-00 \- Particulate Matter Sensor Circuit High. P24B2\-00 \- Particulate Matter Sensor Circuit Intermittent. P24D0\-00 \- Particulate Matter Sensor Supply Voltage Circuit Low. P24D3\-00 \- Particulate Matter Sensor Supply \- Circuit Voltage Above Threshold. P24AF\-00 \- Particulate Matter Sensor Circuit Performance. P24B5\-00 \- Particulate Matter Sensor Heater Control Circuit Low. P24B6\-00 \- Particulate Matter Sensor Heater Control Circuit High. P24B7\-00 \- Particulate Matter Sensor Heater Resistance. P24DA\-00 \- Particulate Matter Sensor Exhaust Sample Error Bank 1. U05A4\-00 \- Particulate Matter Sensor Received Invalid Data From ECM \- PCM. U02A3\-00 \- Loss of Communication with PM Sensor Module. P24B2\-00 \- Particulate Matter Sensor Circuit Intermittent.\*\* Customers may also experience the following: Vehicles equipped with a six\-speed C635 Dual Disc Clutch Transmission \(DDCT\)
- [0807020](/bulletins/10229342.md), 2023-01-09, Service bulletin: VEHICLE SPEED CONTROL; POWER TRAIN; ELECTRICAL SYSTEM; LATCHES/LOCKS/LINKAGES:HATCHBACK/LIFTGATE:LOCK. Power Lift Gate Module \(PLGM\) Will Not Power Open Properly This bulletin involves checking the PLGM software version and replacing the module if required. The customer may experience the following:If the vehicle is locked and the customer tries to open the power liftgate, the exterior power lift gate handle will need exactly two presses topoweropen the liftgate.This customer condition will never set any Diagnostic Trouble Codes \(DTCs\). If the PLGM set any DTCs, normal diagnostic testing must be performed.
- [S2021000004](/bulletins/10229310.md), 2023-01-09, Service bulletin: POWER TRAIN; STRUCTURE. Valve Body Learn Procedure On WiTech Shows The Transmission Is Not In The Proper Gear After Repairs
- [1814222](/bulletins/10226020.md), 2022-11-07, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation, a technician may find one or more of thefollowing Diagnostic Trouble Codes \(DTCs\) have been set: P061A \- Level 2 Torque Performance. P1DD2 \- Torque Request Signal From TCM Denied. Customers may experience the following: Long engine cranking prior to vehicle start more noticeable when the outsidetemperature is above 40 °c \(104 °f\).
- [1809620](/bulletins/10223961.md), 2022-10-17, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\). Flash: Powertrain Control Module \(PCM\) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code \(DTC\) has been set:P24A4\-00 \- Diesel Particulate Filter \- Soot Load.
- [S2018000008](/bulletins/10223551.md), 2022-10-17, Service bulletin: POWER TRAIN; ELECTRICAL SYSTEM. Engine Surge Feel and/or Diagnostic Trouble Code P0299 ? Turbo Underboost Condition After Updating The Powertrain Control Module \(PCM\) Software. \(ETL, ETM, ETN Engines\)

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