Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2020RAV4 XLE, AWDREPAIR AND DIAGNOSISBODY & FRAMEDOOR LOCKSSMART KEY SYSTEM (FOR START, EXCEPT HV) - DIAGNOSTICS - INTRODUCTION (2 OF 3)SMART KEY SYSTEM (FOR START FUNCTION, GASOLINE MODEL)PROBLEM SYMPTOMS TABLE [11/2018 - 08/2020]PROBLEM SYMPTOMS TABLE [11/2018 - 08/2020]
2020 Toyota RAV4 XLE, AWD
Problem Symptoms Table [11/2018 - 08/2020]
2020 Toyota RAV4 XLE, AWDSECTION Problem Symptoms Table [11/2018 - 08/2020]
HINT:
- If the problem occurs in certain locations or times of day, the possibility of wave interference is high.
- If a malfunction occurred after optional components were installed by the dealer, check if there is wave interference from the components.
SMART KEY SYSTEM (FOR START FUNCTION)
| Symptom | Suspected Area | Link |
|---|---|---|
| Power source mode does not change to on (IG) and on (ACC) | Smart Key System (for Entry Function) | Refer to Power Source Mode does not Change to ON (IG and ACC) [11/2018 - ] |
| Affected by Wave Interference | ||
| Transmitter Battery | ||
| Electrical Key Transmitter Sub-assembly | ||
| No. 1 Indoor Electrical Key Antenna Assembly (Front Floor) | ||
| No. 2 Indoor Electrical Key Antenna Assembly (Rear Floor) | ||
| No. 1 indoor electrical key antenna assembly (inside luggage compartment) | ||
| Engine Switch | ||
| Harness or Connector | ||
| Instrument Panel Junction Block Assembly | ||
| Certification ECU (Smart Key ECU Assembly) | ||
| Power source mode does not change to on (ACC) | Harness or Connector | Refer to Power Source Mode does not Change to ON (ACC) [11/2018 - ] |
| ACC Relay | ||
| Instrument Panel Junction Block Assembly | ||
| Certification ECU (Smart Key ECU Assembly) | ||
| Power source mode does not change to on (IG) | Harness or Connector | Refer to Power Source Mode does not Change to ON (IG) [11/2018 - ] |
Relay
|
||
| Instrument Panel Junction Block Assembly | ||
| Certification ECU (Smart Key ECU Assembly) | ||
| Engine does not start | SFI System | Refer to Engine does not Start [11/2018 - 12/2021] |
| Immobiliser Function | ||
| Steering Lock Function | ||
| Harness or Connector | ||
| Park/Neutral Position Switch Assembly | ||
| Shift Lock Control Unit Assembly | ||
| Stop Light Switch Assembly | ||
| Certification ECU (Smart Key ECU Assembly) | ||
| New key cannot be registered | Lin Communication System | Refer to New Key cannot be Registered [11/2018 - 08/2020] |
| Meter / Gauge System | ||
| Reregistration | ||
| Electrical Key Transmitter Sub-assembly | ||
| Steering Lock ECU (Steering Lock Actuator with ECU Assembly) | ||
| ID Code Box (Immobiliser Code ECU)*1 | ||
| Certification ECU (Smart Key ECU Assembly) | ||
| Additional key cannot be registered | Steering Lock Function | Refer to Additional Key cannot be Registered [11/2018 - 12/2021] |
| Electrical Key Transmitter Sub-assembly | ||
| Certification ECU (Smart Key ECU Assembly) | ||
| New key registration warning message is not displayed | Lighting System | Refer to New Key Registration Warning Message is not Displayed [11/2018 - 10/2023] |
| Meter / Gauge System | ||
| Certification ECU (Smart Key ECU Assembly) | ||
| Unable to unlock steering wheel (engine cannot start) | Harness or Connector | Refer to Unable to Unlock Steering Wheel (Engine cannot Start) [11/2018 - 08/2020] |
| Steering Lock ECU (Steering Lock Actuator with ECU Assembly) | ||
| ID Code Box (Immobiliser Code ECU)*1 | ||
| Certification ECU (Smart Key ECU Assembly) | ||
| Steering lock does not lock | Lighting System | Refer to Steering Lock does not Lock [11/2018 - 08/2020] |
| Harness or Connector | ||
| Steering Lock ECU (Steering Lock Actuator with ECU Assembly) | ||
| ID Code Box (Immobiliser Code ECU)*1 | ||
| Certification ECU (Smart Key ECU Assembly) | ||
| Security indicator light does not blink | Harness or Connector | Refer to Security Indicator Light Does not Blink [11/2018 - 10/2022] |
| Security Indicator Light (Combination Meter Assembly) | ||
| Certification ECU (Smart Key ECU Assembly) | ||
| Immobiliser system does not operate properly | SFI System | Refer to Immobiliser System does not Operate Properly [11/2018 - 08/2020] |
| Register ECU Communication ID | ||
| Harness or Connector | ||
| ID Code Box (Immobiliser Code ECU)*1 | ||
| Certification ECU (Smart Key ECU Assembly)*2 | ||
| ECM |
- *1: w/o Occupant Classification System
- *2: w/ Occupant Classification System
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.