DTC C1AA2: Vehicle Speed Tolerance Malfunction [08/2013 - ]: Procedure

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR DTCs (COMBINATION METER)

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Enter the following menus: Body Electrical / Combination Meter / Trouble Codes.

Check if DTCs are output.

Result

Result	Proceed to
Meter / gauge system DTCs are not output.	A
Meter / gauge system DTCs are output.	B

Turn the power switch off.

B → See step 5

A: Go to next step

CLEAR DTCs
1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Chassis / Lane Departure Alert / Trouble Codes.
4. Clear DTCs.
5. Turn the power switch off.
NEXT: Go to next step
CHECK FOR DTCs (LANE DEPARTURE ALERT)
1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Enter the following menus: Chassis / Lane Departure Alert / Trouble Codes.
4. Check for DTCs.
  OK
  
  DTC C1AA2 is not output.
5. Turn the power switch off.
NG → See step 4

OK → END
REPLACE LANE DEPARTURE WARNING CAMERA. Refer to REMOVAL [08/2013 - ]
GO TO DTC CHART (METER / GAUGE SYSTEM). Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2013 - ]