How do i fix a 2008 c300 power seat

Heated Seats
This system allows independent seat electrical heating of each front seat on demand.
The components of the system are:

• the seat heater mats located on the seat cushion and backrest.
• the heated seat module located on the passenger power seat track and cushion frame on manual seat track.
• the heated seat switches, located on the electronic automatic temperature control (EATC) module.
• temperature sensors, located in the seat cushion heater mats.

A new heater mat will come assembled on a new foam pad.
Climate Controlled Seats
The climate control seat system is able to heat and cool the front seats. Each climate controlled seat is operated by push-buttons on the electronic automatic temperature control (EATC) module located on the instrument panel. Each front seat temperature is then monitored and controlled by the climate control seat module (CCSM) located on the front passenger seat track.
The climate controlled seat system contains the following components:

• EATC module
• CCSM
• Thermo-electric device (TED) and blower assembly within each front seat cushion and backrest
• Air filter (attached to each TED and blower assembly)
• Cushion TED adapter attached to the cushion frame
• Cushion and backrest manifolds
• Cushion and backrest foam pads
• Cushion and backrest trim covers
• Seats
  Front Seats
  NOTE: The high speed controller area network (HS-CAN) circuits that pass through the passenger seat harness are part of the main HS-CAN LOOP. If the front passenger seat-to-floor connectors are disconnected, a NO START condition will result.
  NOTE: The medium speed controller area network (MS-CAN) circuits that pass through the driver seat harness are part of the main MS-CAN LOOP. If the front driver seat-to-floor connectors are disconnected, various MS-CAN modules will not be able to communicate.
  The front seats can be equipped with the following systems:
  
  • Two-way manual seat track (passenger only)
  • Four-way manual seat track (driver only)
  • Six-way power seat track
  • Manual recline
  • Power recline
  • Backrest, without fold flat
  • Backrest with fold flat (optional, passenger only)
  • Heated seats
  • Heated/cooled climate controlled seats
  • Memory driver seat
  • Manual lumbar (driver only)
  • Power lumbar
  • Adjustable head restraints
  • Seat side air bags (standard)
  • Occupant classification sensor (OCS) system on passenger seat
  
  Driver Seat Module - Memory Seat
  The power driver seat, power outside rear view mirrors and power adjustable pedals are controlled by the driver seat module (DSM) only when the vehicle is equipped with the programmable/recall memory option. The DSM is located on the driver seat track.
  This system allows automatic positioning of the driver seat to 2 programmable positions.
  
  • A power driver seat position can be stored at any time. The driver must move the seat to the desired position using the driver seat switch assembly. The driver must then depress the memory SET switch which activates the memory SET switch light emitting diode (LED). Within 5 seconds (before the LED goes out), the driver must select a memory position. Memory 1 is selected by depressing memory switch 1. Memory 2 is selected by depressing memory switch 2.
  • If no memory switch input is received within the 5-second time limit, the operation is aborted and the memory seat position switch (set switch) LED is turned OFF. This also occurs if one of the following inputs is received during the 5-second programming limit:
    • Driver seat control switch
    • Memory seat position switch (set switch)
    • Power adjustable pedal switch
  A programmed seat position can only be recalled when the transmission selector is in PARK or NEUTRAL with the ignition switch in the RUN position. A position may be programmed at any time.
• Principles of Operation
  Driver and Passenger Power Seats Without Memory
  The driver and front passenger power seat motors are hardwired to the seat control switches on each respective seat. The circuits are normally at ground through the seat control switch. Each individual seat track, recliner (if equipped) and lumbar (if equipped) motor circuit is switched to power when the specific adjustment position is selected.
  
  Power Driver Seat With Memory
  The driver power seat is controlled by the driver seat module (DSM), if equipped. The memory driver seat feature allows the driver to program a personalized seat position that can be recalled using the memory switch or a remote keyless entry (RKE) transmitter. There are 2 memory settings possible. The outside rear view mirror positions are also stored and recalled with the power driver seat positions.
  The DSM is located underneath the driver seat cushion frame. The DSM does not require calibration to the driver seat track.
  The driver seat control switch provides voltage to the DSM when activated. The NEUTRAL position of each driver seat control switch position is a ground state through the seat control switch contacts. A voltage input causes the DSM to power the appropriate motor until the input is removed. Ground is the normal state of the motor circuits through the DSM and is not switched to control the motors. The DSM internally switches the appropriate circuit from ground to power for operating the motors.
  As the seat is adjusted, the DSM constantly monitors the motor position sensors to record the current seat position. The DSM will remove power from the motor upon termination of the seat control switch input or if the DSM does not see movement from the motor by monitoring the position sensor.
  The DSM communicates diagnostic trouble code (DTC) and other information using the MS-CAN communication bus. It should be noted for diagnostics that because CAN bus communication is more robust and reliable than other methods, it may be possible to have limited module communication with one of the CAN bus circuits disconnected or shorted to ground. Refer to Section 418-00 for information concerning MS-CAN bus communication.

Do you have memory or not ?

Taking the vehicle to a qualified repair shop an having a diagnostic scan of the seat module's done could save time an money , by not replacing parts needlessly .

Lockout Switch Feature
The window lockout switch, when closed, provides power to the passenger door switches enabling normal window operation and when the lockout switch is open, power is cut to the passenger door switches disabling window operation. Normal window operation is still available from the driver master control.

Heated Seats
This system allows the electrical heating of the front seats on passenger demand.
The components of the system are:

• the seat heating elements located in the seat cushion and backrest.
• the heated seat control switch, located on the seat side trim panel.
• temperature sensors located in the seat cushion heating elements.
• heated seat relay.

Do both front seat heaters not work ? Do you know how to test electrical circuits with voltmeter ?
PINPOINT TEST J: THE HEATED SEAT IS INOPERATIVE Test Step Result / Action to Take J1 CHECK HEATED SEAT SWITCH OPERATION

• Key in ON position.
• Press the heated seat switch on the driver and passenger seats.
• Are both heated seat switch indicators illuminated?

Yes
If both indicators illuminate, Go To Pinpoint Test K . If only one indicator illuminates, GO to J5 .

No
GO to J2 . J2 CHECK THE HEATED SEAT RELAY CIRCUITS

• Key in OFF position.
• Disconnect: Heated Seat Relay C3250 (located under the driver seat).
• Key in ON position.
• Measure the voltage at heated seat relay C3250-86, circuit 1003 (GY/YE), harness side and ground; and between C3250-30, circuit 566 (DG), harness and ground.
  
• Are the voltages greater than 10 volts?

Yes
GO to J3 .

No
REPAIR inoperative 1003 (GY/YE) or 566 (DG) circuit. TEST the system for normal operation. J3 CHECK HEATED SEAT RELAY GROUND CIRCUIT

• Key in OFF position.
• Measure the resistance between heated seat relay C3250-85, circuit 57 (BK), harness side and ground.
  
• Is the resistance less than 5 ohms?

Yes
GO to J4 .

No
REPAIR circuit 57 (BK). TEST the system for normal operation. J4 CHECK THE HEATED SEAT RELAY

• Install a fused jumper lead between heated seat relay 3250-30, circuit 566 (DG), harness side and heated seat relay C3250-87, circuit 1064 (YE/LB), harness side.
  
• Do both heated seat indicators illuminate when pressed?

Yes
INSTALL a new heated seat relay. TEST the system for normal operation.

No
REPAIR circuit 1064 (YE/LB) to switches. TEST the system for normal operation. J5 CHECK INOPERATIVE HEATED SEAT SWITCH INPUT

• Key in OFF position.
• Disconnect: Heated Seat Switch C320 (Driver) or C321 (Passenger) for the inoperative heated seat.
• Key in ON position.
• Measure the voltage between heated seat switch C320-2 (driver) or C321-2 (passenger), circuit 1064 (YE/LB), harness side and ground .
  
• Is the voltage greater than 10 volts?

Yes
GO to J6 .

No
REPAIR circuit 1064 (YE/LB). TEST system for normal operation. J6 CHECK CIRCUIT 57 (BK) FOR AN OPEN

• Measure the resistance between heated seat switch C320-4 (driver) or C321-4 (passenger), circuit 57 (BK), harness side and ground.
  
• Is the resistance less than 5 ohms?

Yes
INSTALL a new heated seat switch. TEST the system for normal operation.

No
REPAIR circuit 57 (BK). TEST the system for normal operation It's not that simple , being a fuse . It's probably the relay or the heating element .
PINPOINT TEST K: SEAT DOES NOT HEAT BUT THE HEATED SEAT INDICATOR ILLUMINATES WHEN PRESSED ? Does it ?
Your best bet would be to take to a qualified repair shop .
Do

Power Recliner
The driver seat has an electro-mechanical backrest adjuster. The backrest adjustment switch is located on the side of the seat cushion side shield and is part of the seat control switch. The recliner motor is mounted to the backrest frame. Power recliners and motors are only serviceable by installing a new backrest frame assembly.
Does yours have Driver and Passenger Power Seats Without Memory Or Power Driver Seat With Memory ?

B1666 Seat Driver Recline Motor Stalled On-Demand If the motor does not operate, Go To Pinpoint Test L . If motor operates, Go To Pinpoint Test M . Take it an have it check !
Does your

Fuse Block - Rear
Left side of the luggage compartment, behind the left rear wheel well
.1
PSG SEAT Fuse -
30A
Seat Adjuster Switch - Passenger

2
DRV SEAT Fuse
30A
Seat Adjuster Switch - Driver

Auto Repair: How to Replace a Power Seat Motor - YouTube

? 1:44
https://www.youtube.com/watch?v=EDh-0rs5Fjo
Oct 26, 2010 - Uploaded by automdvideos
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Drivers seat is dead! No power seat or heat. - TheDieselGarage.comwww.thedieselgarage.com/.../96465-drivers-seat-dead-no-power-seat-hea...Mar 22, 2010 - 2003-2005 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2003-2005.... Power seat on driver side didn't work.....passenger did! Neither ...DANG electric seat ' Chevy Truck Forum ' GM Truck Clubwww.gmtruckclub.com/forum/threads/dang-electric-seat.2990/Apr 27, 2006 - 10 posts - ‎7 authors'03 Tahoe My driver seat just stopped, of corse not where I need it, the ... I have a 2003Tahoe and both heated seats are not working. ... with my seat heater on the drivers seat in my 03 Avalanche, it turns ... The driver's side on my Silverado gets way warmer than the passenger side. ... Frozen New Member.Power Seat Problems?? - Tahoe Forum - Che

Do you know anything about automotive electronic's ? Serial data Communication network ? Electronic module's inside the vehicle doors , communicate commands ! No relay ,no fuse .
If the passenger mirror is selected and a direction switch is activated, the DDM sends a serial data message to the PDS indicating that the passenger mirror was selected and the direction to be commanded. The PDS will then supply battery voltage and ground to the appropriate control circuits for the direction selected.
DDM - driver's door module

Door Lock System Components
The power door lock system consists of the following components:
• Driver door module (DDM)
• Passenger door module (PDM)
• Door lock relay--Located in the instrument panel (I/P) fuse block and controls the locking of the rear doors.
• Door unlock relay--Located in the I/P fuse block and controls the unlocking of the rear doors
• Body control module (BCM)
• IP BEC
• Reversible door lock actuators in each door

Power Window System Components
The power window system consists of the following components:
• Driver door module (DDM)
• Body control module (BCM)
• Passenger door module (PDM)
• Rear door power window switches
• Power window motors in each of the doors (circuit breaker protected)

Your best bet , take it to a qualified repair shop that has a diagnostic scanner that can pull code's an view input data form these systems . There is one circuit breaker for the window's an fuse's for the lock's . I would think a data network problem . But that would be a guess , without testing anything is possible on these .

How to diagnose this problem ? Viewing wiring diagrams to see what all is invovled in these electrical circuit's , check power supply's an ground connection's using a DMM - digital multimeter !
What type power seat's ? does it have memory ,heated an cooled etc ?
Power Seats System Description and Operation
There are 2 options of power seat systems available in full size trucks. The first is 6 way driver and passenger power seats without memory. The second is an 8-way driver seat plus 4-way lumbar with memory, heat and optional cool function. While the passenger has 8-way power seats with heat and optional cool function. For the driver memory seat operation, refer to Memory Seats Description and Operation. Power seats without memory are completely controlled through the power seat switch. Battery voltage is supplied to the power seat switch through the power seat circuit breaker. While the seat adjuster switches are in an inactive state the switch contacts are closed to the power seat switch ground circuit. When a power seat switch is pressed to an active state the switch contact is closed to the battery voltage supply circuit. Each seat adjuster motor is controlled by the power seat switch through 2 motor control circuits. The seat adjuster motors are bidirectional and the direction of adjuster motor rotation is determined by which of the adjuster motor control circuits is switched to battery voltage while the other remains grounded.

If it has memory seat's there is a control module !
Battery voltage is supplied to the driver seat module through a 25 A circuit breaker. The driver seat module supplies the seat adjuster switch assembly with a battery positive reference voltage. While the seat adjuster switches are in an inactive state the switch contacts are closed to the adjuster switch common circuit.
Both right side windows have a seperate power supply from the left side window's ,has RT DOORS circuit breaker CB1 - 25amp. location left instrument panel fuse block . Circuit breaker's very rarely fail .Do the door lock's work on that side of the vehicle ? The windows won't work with their own switche's ?
The DDS controls the passenger window through a GMLAN message to the PDS. When a power window switch is activated in the up or down positions the PDS supplies power and ground to the window motor control circuits to drive the window motor in the required direction. Prior to activating a power window motor the PDS will supply the control circuit with a low current bias voltage in order to determine that a short to ground condition does not exist, and during window motor operation the PDS continues to monitor the motor current to verify proper window motor operation. (Scan tool support is available for this system)
Check PDM fuse 4 15 amp ,this supply's B+ voltage to the DOORLOCK/WINDOW switch passenger side . Check for broken wires inside the flex boot from the body to the passenger door .

1. The Mercedes-Benz C-Class line of compact vehicles provides the German brand with a price point model for showrooms. The C-Class enjoys the trickle down effect of the innovations launched in more expensive Mercedes models such as the E-Class and the S-Class. The W204-bodied C300 was introduced for the 2008 model year and remains in production with the same specifications as of the 2011 model year.
Drivetrain
2. The Mercedes-Benz C300 is powered by a naturally aspirated, V6 engine with 3.0 liters of displacement. This motor has a 24-valve double overhead cam (DOHC) design with a 3.46-inch bore, a 3.23-inch stroke and a compression ratio of 11.3:1. Output for this engine is rated at 228 horsepower at 6,000 rpm and 221 pound-feet of torque at 2,700 rpm. Mercedes offers this compact luxury sedan with a choice of a six-speed manual or a seven-speed automatic transmission.
Exterior Dimensions
3. The C300 sits on a 108.7-inch wheelbase with an overall body length of 182.3 inches and width of 69.7 inches. The C300 Sport model has an overall height of 56.3 inches with a 60.4-inch front track and a 59.6-inch rear track, while the C300 Luxury model is 56.9 inches high with a 60.7-inch front track and a 60.8-inch rear track. Both trim levels of the Mercedes-Benz C300 offer 35.6-foot turning diameters.
Interior Dimensions
4. The Mercedes-Benz C300's cabin provides 88.2 cubic feet of passenger space with a trunk that offers 12.4 cubic feet of luggage room. Front-seat occupants are provided 37.1 inches of headroom, 41.7 inches of legroom, 54.7 inches of shoulder room and 52.3 inches of hip room. Rear-seat passengers are afforded 36.9 inches of headroom, 33.4 inches of legroom, 55.1 inches of shoulder room and 54.9 inches of hip room.
Safety
5. The National Highway Traffic Safety Administration (HTSA) frontal impact crash test resulted in four-star ratings (out of a possible five stars) for driver and passenger protection. This vehicle also earned a four-star rating in the NHTSA's rollover test, while the administration's side impact crash test resulted in five-star ratings. The Insurance Institute for Highway Safety (IIHS) frontal offset impact crash test earned the C300 a "Good" overall rating, which is the highest rating given by the IIHS.

Hi,

2001 Dodge Caravan Performance Features -3,301 cc 3.3 liters 6 V engine with 93 mm bore, 81 mm stroke, 9.3 compression ratio, overhead valve and two valves per cylinder
-Unleaded fuel
-Fuel economy EPA highway (l/100km): 9.8
-Multi-point injection fuel system
-Main 76 liter unleaded fuel tank
-Power: SAE and 134 kW , 180 HP @ 5,000 rpm; 210 ft lb , 285 Nm @ 4,000 rpm
2001 Dodge Caravan Handling & Driving Features -ABS
-Two disc brakes including two ventilated discs
-Spacesaver steel rim under body spare wheel
-Strut front suspension with stabilizer bar independent with coil springs , beam rear suspension with stabilizer bar rigid with leaf springs
2001 Dodge Caravan Exterior Features -Body side molding
-Front and rear body color bumpers
-Driver and passenger power heated black door mirrors
-External dimensions: overall length (mm): 4,803, overall width (mm): 1,996, overall height (mm): 1,750, wheelbase (mm): 2,878, front track (mm): 1,600, rear track (mm): 1,626 and curb to curb turning circle (mm): 11,460
-Complex surface lens halogen bulb headlights
-Double sliding minivan side door
-Remote control operation opening rear ¼ windows
-Metallic paint , gloss paint , pearl paint
-Fixed rear window
-Tinted glass on cabin, rear and side
-Weights: curb weight (kg) 1,842, gross trailer weight braked (kg) 907 and max legal load (kg) 772
-Windshield wipers with variable intermittent wipe
2001 Dodge Caravan Interior Features -Air conditioning with rear outlet
-Fixed mast antenna
-Manufacturer's own audio system
-Automatic drive indicator on dashboard
-Below seat storage under passenger seat
-Cargo capacity: all seats in place (liters): 433, all seats removed (liters): 4,154 and third row seats removed (liters): 1,291
-Clock
-Dashboard full console with open storage box
-Delayed/fade courtesy lights
-Cruise control
-Front seats, rear seats and 3rd row seats cup holders
-Door ajar warning
-Door pockets/bins for driver seat and passenger seat
-Floor covering: carpet in load area
-Driver and passenger front airbag
-Bucket seat
-3-point reel height adjustable front seat belts on driver seat and passenger seat
-Front seat center armrest
-Glove compartment
-Height adjustable two head restraints on front seats, rear seats and 3rd row seats
-Internal dimensions: front headroom (mm): 1,011, rear headroom (mm): 998, front hip room (mm): 1,440, rear hip room (mm): 1,722, front leg room (mm): 1,031, rear leg room (mm): 930, front shoulder room (mm): 1,588 and rear shoulder room (mm): 1,643
-Low fuel level warning
-Low washer fluid level warning
-Internal button power locks
-Power steering
-Front power windows with one one-touch
-Front reading lights
-3-point reel height adjustable rear seat belts on driver side and passenger side
-Bench one-piece two rear seats
-Rear view mirror
-Upgraded cloth/velour seat upholstery
-Seating: seven seats
-Six speakers
-Plastic steering wheel
-Tachometer
-3-point reel third row seat belts on driver side , 3-point reel third row seat belts on passenger side , lap static third row seat belts on center side
-Front facing bench removable one-piece third row seats with capacity three
-Driver and passenger vanity mirror
-Ventilation system with recirculation setting
Thanks.