| 
                           Last Modified: 05-08-2025 | 
                        6.11:8.1.0  | 
                        
                           Doc ID: RM100000001HUAC | 
                      
                     
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                           Model Year Start: 2019 | 
                        
                           Model: RAV4 HV | 
                        
                           Prod Date Range: [02/2019 -                    
                                       ] | 
                      
                     
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                           Title: HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for AWD with NICKEL METAL HYDRIDE BATTERY): C134800; Different Diameter Tire; 2019 - 2025 MY RAV4 HV [02/2019 -        ] | 
                      
                   
                  
                     
                        
                           | 
                               DTC 
                            | 
                           
                               C134800 
                            | 
                           
                               Different Diameter Tire 
                            | 
                         
                     
                   
                   
                  DESCRIPTION
                  If the hybrid vehicle control ECU assembly receives a signal from the skid control ECU assembly that the AWD system is malfunctioning, the hybrid vehicle control ECU assembly outputs this DTC. 
                  
                     
                        
                        
                        
                        
                        
                        
                     
                     
                        
                           | 
                               DTC No. 
                            | 
                           
                               Detection Item 
                            | 
                           
                               DTC Detection Condition 
                            | 
                           
                               Trouble Area 
                            | 
                           
                               MIL 
                            | 
                           
                               Warning Indicate 
                            | 
                         
                     
                     
                        
                           | 
                               C134800 
                            | 
                           
                               Different Diameter Tire 
                            | 
                           
                               The vehicle is being driven in a straight line at a constant speed of 30 km/h (19 mph) or more, and the wheel speeds differ between front and rear significantly. 
                              (1 trip detection logic) 
                            | 
                           
                              
                                 
                                    - 
Tire and wheel size
 
                                    - 
Tire pressure
 
                                    - 
Speed sensor circuit
 
                                    - 
Hybrid vehicle control ECU assembly
 
                                  
                               
                            | 
                           
                               Does not come on 
                            | 
                           
                               Master Warning: 
                              Does not come on 
                            | 
                         
                     
                   
                   
                  PROCEDURE
                   
                  
                  (a) Check the tire sizes to ensure that the front and rear tire sizes are not different. 
                  Click here
                        
                           
                               
                           
                        
                        
                           
                               
                           
                        
                        
                           
                               
                           
                        
                     
                   
                  HINT: 
                  If different tire sizes are discovered, replace the tires so that the tire sizes are the same on all 4 wheels. 
                  (b) Adjust the air pressure in the tires. 
                  Click here
                        
                           
                               
                           
                        
                        
                           
                               
                           
                        
                        
                           
                               
                           
                        
                     
                   
                  
                     
                        
                           
                              
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NEXT
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                  (a) Clear the DTCs. 
                  Click here
                        
                           
                               
                           
                        
                        
                           
                               
                           
                        
                     
                   
                  Powertrain > Hybrid Control > Clear DTCs
                  (b) Turn the ignition switch to ON. 
                  (c) Drive the vehicle at a speed of 30 km/h (19 mph) or more. 
                  (d) Check if the same DTC is output. 
                  Click here
                        
                           
                               
                           
                        
                        
                           
                               
                           
                        
                     
                   
                  Powertrain > Hybrid Control > Trouble Codes
                  (e) Check that no speed sensor DTCs are output. 
                  Click here
                        
                           
                               
                           
                        
                        
                           
                               
                           
                        
                     
                   
                  Chassis > ABS/VSC/TRAC > Trouble Codes
                  
                  
                     
                        
                           | 
                               Result 
                            | 
                           
                               Proceed to 
                            | 
                         
                     
                     
                        
                           | 
                               DTC C134800 and speed sensor DTC are not output. 
                            | 
                           
                               A 
                            | 
                         
                        
                           | 
                               Speed sensor DTC is output. 
                            | 
                           
                               B 
                            | 
                         
                        
                           | 
                               DTC C134800 is output. 
                            | 
                           
                               C 
                            | 
                         
                     
                   
                  
                  
                  
                  
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