Prius

T-SB-0172-09

June 11, 2009

Combination Meter - Intermittent Display

Service
Category Vehicle Interior

Section
Meter/Gauge/Display

Market
USA

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Applicability



Introduction
Some 2004-2009 model year Prius vehicles may experience an intermittent condition where the combination meter display will not illuminate in cold weather conditions. An updated combination meter ECU is now available to correct this condition.

In some instances while the vehicle is in park mode, the vehicle may not "ready off" by pressing the power switch. In this case the vehicle can achieve "ready off" by pushing and holding the power switch for more than 3 seconds.

Note

^ The combination meter computer contains the vehicle odometer memory. This component should be ordered directly from the vendor (Yazaki) with the correct mileage programmed.

Please refer to PANT Bulletin G107-29: Digital Odometer Replacement Program Expansion, for additional information.

Repair Procedure

1. Disconnect the negative (-) battery terminal.

2. Remove the combination meter assembly.

Refer to the Technical Information System (TIS) applicable model and model year Repair Manual:

^ 2004 / 2005 Prius:
Vehicle Interior-Instrument Panel/meter - "Combination Meter Assy: Overhaul"

^ 2006 / 2007 / 2008 / 2009 Prius:
Vehicle Interior - Meter/Gauge/Display - Meter: Combination Meter: Removal"

3. Disassemble the combination meter and remove the combination meter ECU.

^ 2004 / 2005 Prius:
Vehicle Interior - Instrument Panel/meter - "Combination Meter Assy: Overhaul"

^ 2006 / 2007 / 2008 / 2009 Prius:
Vehicle Interior - Meter/Gauge/Display - Meter: "Combination Meter: Disassembly"

4. Reassemble the combination meter assembly.

^ 2004/ 2005 Prius:
Vehicle Interior - Instrument Panel/meter - "Combination Meter Assy: Overhaul"

^ 2004 / 2005 Prius:
Vehicle Interior - Meter/Gauge/Display - Meter: "Combination Meter: Reassembly"

5. Reinstall updated combination meter assembly.

^ 2004 / 2005 Prius:
Vehicle Interior-Instrument Panel/meter - "Combination Meter Assy: Overhaul"

^ 2006 / 2007 / 2008 / 2009 Prius:
Vehicle Interior - Meter/Gauge/Display - Meter: "Combination Meter: Installation"

6. Reconnect the negative (-) battery terminal.

7. Reset the inclination sensor.

NOTE
Perform the following procedures to correct inclination of the meter and inclination sensors when installing / removing / replacing the meter or after replacing the inclination sensors or main base.

^ 2004 / 2005 Prius:
Vehicle Interior - Diagnostics - "Combination Meter Assy: On-Vehicle Inspection"

^ 2006 / 2007 / 2008 / 2009 Prius:
Vehicle Interior - Meter/Gauge/Display - "Meter/Gauge System: On vehicle Inspection"

8. Check operation of combination meter and verify vehicle will "ready off" properly.

9. Initialize power systems:

^ 2004 Model year Prius: EL009-04 "Power Window/Roof Initialization Procedures"

^ 2005 Model year Prius: PD008-05 "Power System Initialization During PDS"

^ 2006 Model year Prius: PD014-06 "Power System Initialization During PDS"

^ 2007 Model year Prius: PD010-07 "Power System Initialization During PDS"

^ 2008 Model year Prius: T-SB-0139-08 "Power Systems Initialization During PDS"

2009 Model year Prius: T-SB-0221-08 "Initialization of Power Window"