# Service bulletin TC\-14\-034 A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned. - Type: Service bulletin - NHTSA id: 10056501 - Published by NHTSA: 2014\-12\-16 - Manufacturer's number: TC\-14\-034 - Manufacturer's date: 2014\-07\-31 - NHTSA component: ENGINE AND ENGINE COOLING:COOLING SYSTEM ## NHTSA's summary TOYOTA: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. AN ENHANCEMENT WARRANTY PROGRAM, ON CERTAIN VEHICLES, HAS BEEN ANNOUNCED TO PROVIDE WARRANTY COVERAGE FOR REPAIRS RELATING TO LEAKAGE OR SEEPAGE ENGINE OIL COOLER PIPE. MODEL 2007\-11 SIENNA, 2008\-11 HIGHLANDER, 2009\-11 VENZA, 2011 HIGHLANDER HYBRID. \*PE ## The document No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number. ## Components Engine, Cooling system ## Vehicles listed - 2008 to 2011 TOYOTA HIGHLANDER - 2011 TOYOTA HIGHLANDER HYBRID - 2007 to 2011 TOYOTA SIENNA - 2009 to 2011 TOYOTA VENZA ## Other bulletins for the same vehicles and component - [T\-TT\-0628\-20](/bulletins/10183281.md), 2020-11-30, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. TT: HVAC drain tube is found to be blocked/clogged. - [T\-SB\-0074\-20](/bulletins/10179698.md), 2020-09-14, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN; EQUIPMENT; ELECTRICAL SYSTEM. TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid Vehicle; 2016 ? 2020 model year Mirai and RAV4 Hybrid Vehicle; and 2020 model year Corolla Hybrid Vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes \(DTCs\) P0A80/P1AC000 and/or P0A7F/P1A8000 stored due to dust or debris buildup in the HV battery cooling fan and/or HV cooling filter. Follow the procedure in this bulletin to address this condition. - [T\-SB\-0074\-20](/bulletins/10179602.md), 2020-09-14, Service bulletin: ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. TSB: Some 2003 ? 2020 model year Prius, Prius C, Prius V; 2006 ? 2019 model year Highlander Hybrid Vehicle; 2007 ? 2020 Camry Hybrid Vehicle; 2013 ? 2020 model year Avalon Hybrid Vehicle; 2016 ? 2020 model year Mirai and RAV4 Hybrid Vehicle; and 2020 model year Corolla Hybrid Vehicles may exhibit a MIL ON condition with Diagnostic Trouble Codes \(DTCs\) P0A80/P1AC000 and/or P0A7F/P1A8000 stored due to dust or debris buildup in the HV battery cooling fan and/or HV cooling filter. Follow the procedure in this bulletin to address this condition. - [T\-TT\-0468\-17 Rev](/bulletins/10178524.md), 2020-08-17, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. TT: HVAC drain tube is found to be blocked/clogged. - [T\-SB\-0198\-11 Rev](/bulletins/10134345.md), 2018-04-23, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. TSB: For vehicles that are used under certain severe operating conditions, the HV Battery Cooling Fan may experience an excessive buildup of dust, lint, or other debris that can reduce the efficiency of the HV Battery Cooling System. HV Battery Cooling Fan maintenance and cleaning should be performed to address this condition. - [T\-TT\-0051\-10](/bulletins/10132137.md), 2018-04-02, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT:APPLIANCE:AIR CONDITIONER. If a customer states there is an unpleasant odor in the vehicle from the HVAC system, there are various factors that may be involved. - [T\-SB\-0152\-13](/bulletins/10132087.md), 2018-04-02, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM. Some vehicles may exhibit a condition where there is a lack of cooling from the A/C system. An A/C Line Retainer \(Piping Clamp\) may have become unlatched and caused a refrigerant leak. Follow the procedure in this bulletin to address this condition. - [T\-SB\-0033\-14](/bulletins/10131826.md), 2018-04-02, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. Some vehicles in particular geographic areas may exhibit a condition where the HVAC Evaporator Drain Hose has become obstructed with an insect nest. An insect repellent drain hose tip \(ARINIX® Tip\) is now available to help minimize future occurrences of this environmental condition. For some models, a new drain hose is required to properly fit the ARINIX® Tip. Follow the procedures in this bulletin for proper handling and installation of this optional service part. - [TC\-10\-017](/bulletins/10036969.md), 2011-04-25, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. TOYOTA SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. LIMITED SERVICE CAMPAIGN \(LSC\) 90K\-PHASE 4. REPLACE THE VVT\-I OIL HOSE IN CERTAIN 2008 MODEL HIGHLANDER VEHICLES EQUIPPED WITH A 2GR\-FE \(V6\) ENGINE. THE RUBBER PORTION OF OIL SUPPLY HOSE FOR THE VVT\-I ACTUATOR MAY DEGRADE OVER TIME. \*PE - [TC\-10\-032](/bulletins/10034047.md), 2010-10-13, Service bulletin: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS. TOYOTA SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON CERTAIN VEHICLES EQUIPPED WITH A 2GR\-FE \(V6\) ENGINE, THE RUBBER PORTION OF THE OIL SUPPLY HOSE FOR THE VVT\-I ACTUATOR MAY DEGRADE OVER TIME. THIS CONDITION MAY CAUSE OIL TO LEAK FROM THE VVT\-I OIL HOSE PRODUCING ABNORMAL ENGINE NOISE AND THE OIL PRESSURE LIGHT TO ILLUMINATE. CSC LETTER WAS REC'D. \*PE JSON: [/v1/bulletins/10056501](/v1/bulletins/10056501) [Report an error on this page](https://github.com/wenmar-pro/wenmar-open/issues/new?template=data_correction.yml&title=Data%20correction%3A%20Service%20bulletin%20TC-14-034&page=https%3A%2F%2Fopen.wenmarpro.com%2Fbulletins%2F10056501&vehicle=Service%20bulletin%20TC-14-034)