Jeep Grand Cherokee - Recent Questions, Troubleshooting & Support


Oops! Should mention I have 2004 Jeep Grand Cherokee, not Liberty.

2004 Jeep Grand... | Answered 8 hours ago


it is a sentry key light. which is part of the anti theft device for the ignition for the jeep

2000 Jeep Grand... | Answered 22 hours ago


I will post it in 2 different posts because its too long DB

HEATED SEAT SYSTEM
Individually controlled driver and passenger side electrically heated front seats are available factoryinstalled optional equipment on this model, when it is also equipped with the power seat option. The heated seat system allows both the driver and the front seat passenger the option to select one of two seat heating ranges, Low or High, or to turn the individual seat heaters OFF using the heated seat switches located in the center lower bezel near the bottom of the instrument panel center stack. The heated seat switch circuit operates on ignition switched battery current supplied through a fuse in the junction block, only when the ignition switch is in the ON position.

The heated seat system consists of the following components
  • Heated seat elements
  • Heated seat sensors
  • Heated seat module (or memory heated seat module)
  • Heated seat switches.
The heated seat system also relies upon resources shared with other electronic modules in the vehicle over the Programmable Communications Interface (PCI) data bus network. The PCI data bus network allows the sharing of sensor information. This helps to reduce wire harness complexity, internal controller hardware, and component sensor current loads. At the same time, this system provides increased reliability enhanced diagnostics, and allows the addition of many new feature capabilities. For diagnosis of these electronic modules or of the PCI data bus network, the use of a DRB scan tool and the proper Diagnostic Procedures are recommended.

The electronic modules that may affect heated seat system operation are as follows:
  • Body Control Module (BCM) - Refer to Body Control Module in Electronic Control Modules for more information.
  • Heated Seat Module (HSM) - Refer to Heated Seat Module in Electronic Control Modules for more information.
  • Memory Heated Seat Module (MHSM) - If the vehicle is equipped with the Memory System, refer to Memory Seat Module in Electronic Control Modules for more information.
Refer to Power Seats Premium I/III in the Contents of Wiring Diagrams for complete circuit diagrams. Following are general descriptions of the major components in the heated seat system.

The heated seat system will only operate when the ignition switch is in the ON position, and the surface temperature at the front seat heating element sensors is below the designed temperature set points of the system. The heated seat system will not operate in ambient temperatures greater than about 41 °C (105 °F) . The front seat heating elements and sensors are hard wired to the Heated Seat Module (HSM) or the Memory Heated Seat Module (MHSM).

The heated seat switches are hard wired to the Body Control Module (BCM). The BCM monitors the heated seat switch inputs, then sends heated seat switch status messages to the HSM or MHSM over the Programmable Communications Interface (PCI) data bus. The HSM or MHSM contains the control logic for the heated seat system. The HSM or MHSM responds to the heated seat switch status messages, ignition switch status messages, and the front seat heating element sensor inputs by controlling the output to the front seat heating elements through integral solid-state relays.

When a seat heater is turned ON, the sensor located on the seat cushion electric heater element provides the HSM or MHSM with an input indicating the surface temperature of the seat cushion. If the surface temperature input is below the temperature set point for the selected Low or High heated seat switch position, the HSM or MHSM energizes the integral solid-state relay, which supplies battery current to the heating elements in the seat cushion and back. When the sensor input indicates the correct temperature set point has been achieved, the HSM or MHSM de-energizes the solid-state relay. The HSM or MHSM will continue to cycle the solid-state relay as needed to maintain the temperature set point.

The HSM or MHSM and the seat heater elements operate on non-switched battery current supplied through the power seat circuit breaker in the junction block. However, the HSM or MHSM will automatically turn OFF the heating elements if it detects an open or short in the sensor circuit, a short or open in the heating element circuit causing an excessive current draw, or when the ignition switch is turned to the OFF position.

See the owner's manual in the vehicle glove box for more information on the features, use and operation of the heated seat system.

I WILL POST THE REST

2002 Jeep Grand... | Answered 2 days ago


Watch this video. It is on a 2000 but may be close to the same as a 1999.

https://www.youtube.com/watch?v=lBwpusnz8cE

1999 Jeep Grand... | Answered on Mar 21, 2019


In the fuel evap system you may have a defective leak detection pump.

1999 Jeep Grand... | Answered on Mar 21, 2019


there's a website reliable-store
all heavy equipment repair issu es servicing, loading, wiring, engine problems everything is covered here its a must try

2006 Jeep Grand... | Answered on Mar 20, 2019


there's a website reliable-store
all heavy equipment repair issues servi cing, loading, wiring, engine problems everything is covered here its a must try

2006 Jeep Grand... | Answered on Mar 20, 2019


the AC compressor has a "shutdown switch" when not enough refrigerant is in the system run a wire from the

run a wire from the + battery cable to the compressor pulley switch with the engine running, ac on if the compressor clucth engages (turns) you have low refrigerant charge





=

1995 Jeep Grand... | Answered on Mar 16, 2019


hello who can help me please with my radio code for a Jeep??

info:

Part no P04858543AC-A

Date code 2609

Supplier 17719A

S/N TQ1AA2609A5016

please can you send me the code to > dr.joss@rambler.ru

thank you

1997 Jeep Grand... | Answered on Mar 16, 2019


I take help from online websites that have this service like helping in repair some like reliable-store have instant help.. others are a bit slow which I don't prefer... rest is up to u.. U can also get free manuals

1999 Jeep Grand... | Answered on Mar 14, 2019


not knowing much detail of the problem in this situation. the first thing I would do is change the fluid and filter assuming this is an automatic model. If manual, it could be synchronizer or clutch adjustment. I hope this helps you with the issue at hand. Jesus loves you, John 3:16-17 (KJV)

Jeep Grand... | Answered on Mar 14, 2019


Hi there's this website something like reliable-store and it is very amazing for manual for repairing servicing anything
someone on fixya recommended it to me and I thank him even today
They have full manuals and it's verrrrry cheap and mine
I got free in offers
3rd time I bought it, I also had an issue with the file so the girl replaced it in 30 mins
there is one website more but i don't remember its name it was 2 years back bitman something link this
Try these out brother

2006 Jeep Grand... | Answered on Mar 13, 2019


you can try out some guide from here reliable-store
they also provide live chat feature for instant help and it's very useful

2014 Jeep Grand... | Answered on Mar 12, 2019


Inset the key into the driver door and turn to unlock position three times to disengage alarm system without remote. Do the same in lock position for setting alarm without key fob.

2005 Jeep Grand... | Answered on Mar 11, 2019

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