Checks, in order
- Test the 12 V batteryLoad test or at least measure the 12 V battery; a reading under about 12.4 V at rest, or a truck that sat for weeks, explains most of these messages. Charge it fully and clear the codes before anything else.easy $ · under about $50
- Read the hybrid codesA scanner that reads Toyota hybrid modules will show whether the fault is in the inverter, the battery ECU or a module processor (P0606 family). Toyota bulletins TSB-0030-23, T-SB-0046-23 and TSB004623 covered those codes with software updates on 2022–2023 trucks.medium $ · under about $50
- WarrantyThe hybrid components carry Toyota's 8 year/100,000 mile hybrid system warranty and the hybrid battery 10 years/150,000 miles. Anything beyond the 12 V battery belongs at a dealer.easy $ · under about $50
Applies to: 3rd generation Tundra, 2022 on, with the 3.4L twin-turbo V35A-FTS V6 and the 10-speed automatic, including the i-FORCE MAX hybrid. Most items are covered by Toyota's 3 year/36,000 mile basic and 5 year/60,000 mile powertrain warranties or by an open recall, so the first check on this truck is usually a VIN lookup.
Tools and parts for these checks
Links below are Amazon affiliate links: as an Amazon Associate, toyotadata earns from qualifying purchases, at no extra cost to you. Confirm fitment for your exact truck before you order.
| ITEM | USED FOR | BUY |
|---|---|---|
| Digital multimeter | Voltage, ground and continuity checks | Shop on Amazon |
| Battery load tester | Testing the battery under load before replacing parts | Shop on Amazon |
| Battery terminal cleaning brush | Cleaning corroded terminals and cable ends | Shop on Amazon |
| Bluetooth OBD2 scanner with live data | Reading and clearing codes and watching live sensor data | Shop on Amazon |
More 3rd Gen Tundra problems
- Knock from the engine, rough running, stall or no-start (main bearing recall) (Engine)
- "Reduced engine power" warning with P0243 or P0247, or a rattle from the turbos at idle (Engine)
- Pop or clunk under the truck on the first start of the day, hesitation coming to a stop, harsh 1–2 shift (Transmission)
- Rear camera image missing or wrong, blank instrument cluster, or the multimedia screen reboots (Body & Electrical)
- Vibration or clunk from the rear, gear oil on a rear wheel, or a loose rear axle (2022 recall) (Drivetrain)
- Fuel smell, brake line chafe, or reverse lights with moisture inside (open recalls) (Body & Electrical)
All 8 3rd Gen Tundra symptoms in the interactive troubleshooter →
General guidance from owner experience. Confirm torque specs, fluid capacities and procedures in the factory service manual. Brakes, steering and anything structural: if in doubt, have a qualified shop inspect it before driving.