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Every year, Volkswagen issues hundreds of Technical Service Bulletins (TSB) covering everything from sunroof leaks to new oil specifications. The TSB is a communication tool provided to help technicians troubleshoot problems in the field and expedite the repair process by arming them with brand-specific service information.
Below are some of the top 10 Volkswagen TSBs available to independent repair shops and the latest out of warranty VW models.
1. Reflashing and Reprogramming
Model: All
One of the more common types of TSB issued over the last three years is for overhaul of engine control modules and transmission control software. Some of these improvements date back to the 2008 model year. The TSB largely addresses emissions issues associated with the operation of the oxygen sensors and catalytic converters. As a rule, it is recommended that you make sure the Volkswagen you are working with has the latest ECM calibration. A new calibration can help keep the check engine light off and extend converter life or cure stuck codes.
Volkswagen also has some software updates for the DSG gearbox. This new software can improve gear shift quality, overcome hesitation and reduce clutch noise problems. Checking for these software updates before replacing the clutch or gearbox can help get the vehicle right the first time.
2. Rear Main Seal Installation 1.8L and 2.0L
Newsletter #13-17-02 (2044350)
Model: Volkswagen models with 1.8L and 2.0L turbocharged petrol engines produced between 2008-’17.
TSB this information includes the correct seal flange orientation for the rear main seal. The sealing lip must face the engine block. If the seal is not installed properly, it may cause leakage as soon as the car is started. Easy to install the seal upside down. VW recommends using the correct seal driver tool to keep the seals at the correct depth.
3. 2.0L CCTA Code P0016 For Camshaft Position Sensor Caused by a Blocked Part
Bulletin #15-17-02
Model: 2009-’17 Models with 2.0L CCTA or CBFA Engine
This TSB addresses issues with non-return valves for variable valve timing actuator oil supply. The valve strainer can be damaged and cause it to stay open. An open valve causes the oil in the actuator to bleed.
When the engine is started or running at a lower engine speed, the engine cannot drive the camshaft and the code is set in the ECM. The fix is to remove the filter. There are two types of strainers with different removal processes described in the TSB.
This TSB covers the test procedure and method for removing the filter, which involves applying pressure to a one-way valve and measuring spoilage. If the valve does not hold pressure, it must be replaced.
4. Improved Intake Manifold 2.0L for Code P2004, P2014 and P2015
Bulletins #24-17-04 and #24-17-05
Model: 2006-’16 2.0L engine (BPY, CCTA and CBFA)
Both TSBs include an upgraded section for the intake manifold on the 2.0L turbocharged engine. The improved solenoid valve for the intake manifold flap that regulates fresh air into the engine can become worn or clogged with dirt.
This blockage will cause codes P2004, P2014 and P2015. This TSB also includes a method to test for worn valves using a scan tool to measure manifold vacuum pressure.
5. Sporadic Throttle-By-Wire Codes Cured With Use of New Terminals
Bulletin #01-17-05
Model:
• 2006-’08 – Jetta, Rabbit, GTI, Passat and EOS with 2.0L BPY engines.
• 2008-’09 – All with 2.0 CCTA and CBFA engines
This TSB addresses how to resolve the following DTCs:
P1545: Throttle Valve Control System Fault
P0121: Throttle/Pedal Position Sensor/Switch A Range Performance
P0123: Throttle/Pedal Position Sensor/High Circuit Switch
P0221: Throttle/Pedal Position Sensor/Switch B Range Performance
P0222: Throttle/Pedal Position Sensor/Switch B Circuit Low
The fix for this throttle-by-wire DTC is to replace the terminals in the connector housing on the wiring harness connected to the throttle body. This TSB shows how to stagger the joints to reduce the strain on the armour.
6. Direct Fuel Injection High and Low Pressure Pump Diagnostics
Bulletin #20-17-01
Model: 2008-’15 model with 2.0L CCTA and CBFA engine
This is required reading for any technician working on direct fuel injected vehicles. This bulletin discusses how to diagnose no-start or long crank conditions after the vehicle has been parked for a long time. The bulletin also addresses the rough operation issue and DTC P0087 for low fuel pressure.
It also describes how to use two-way scan and test tool data to determine whether the source of the problem is the low pressure pump in the tank or the high pressure fuel pump in the engine.
If you are looking to ditch the expensive high pressure fuel pump on your vehicle, you need to read this first.
7. Cooling Fan Operation
Bulletin #19-16-02
Model: 2005-’17, all models
This two-page TSB covers the operation of the cooling fans and how long they can run after the ignition is turned off. The bulletin states that the fans can run for up to 15 minutes after the ignition is turned off for petrol engines and 16 minutes for diesel engines.
8. Oil Specifications
Bulletin for oil list.
Model: All
Almost every year, Volkswagen issues a TSB regarding oil specifications for its vehicles. The first time this TSB was issued was in 2008 to ensure the oil met VW 502 specifications. The TSB lists oil brands by weight and what VW standards they meet for petrol and diesel engines. The only updates this year are for additional oil brands and weights.
TSB recommends that owners always carry spare oil that meets standards in case the engine oil level needs to be topped up while on the road.
For the past decade, Volkswagen has warned shops and consumers that substandard oil can cause damage to the engine and catalyst, and low-quality oil can cause damage to the high-pressure fuel pump lobes in the camshaft and pump plunger.
9. Cooling and Mixing Quality
Newsletter: #17-19-01
Model: All 1994-2016 (except Routan)
This TSB includes G11, G12, G12+ and G12++ coolants and their replacement with G13 coolant. This bulletin can help you identify the different types of coolant by color and what the different coolant mixes look like. The photo on the TSB shows the color of each type of engine coolant (see page 50). The adjacent table shows the compatibility of various coolers.
G12+, G12++, and G13 coolants are lifetime coolants when used exclusively in a coolant system.
TSB suggests that the coolant can be mixed when adding/increasing fluid levels, as described in the table, but it is always best practice to change the coolant due to reduced corrosion protection when the coolant is mixed.
When the coolant is changed due to a cooling system problem, or if the wrong fluid is used, the coolant system must be drained and filled with the correct coolant.
You can read the table by identifying the factory filled coolant at the top and comparing it to the available service coolant on the left (see page 48). (Example: If the car was filled with G12++ from the factory, the coolant allowed is G12++ or G13.)
If the vehicle is found to have the wrong coolant, the cooling system must be emptied and then filled with the correct coolant.
10. The door cannot close or open because it is leaking
Newsletter: #57-17-01
Model: 2009-’17 Golf/GTI; 2015-’17 Golf R; Jetta 2011-’17; 2012-’17 Passat and 2010-’17 Tiguan
TSB #57-17-01 is an interesting one that addresses a condition familiar to drivers in the North – frozen doors. This TSB covers a large population of vehicles that have an actuator for the lock mounted on the front door on the striker plate. Water may leak into the actuator and freeze. When the temperature drops below 32º F, it can prevent the door from closing, locking or unlocking.
The remedy was to remove the unit and install six-inch butyl sealing wires around strategic areas of the mechanism to prevent water intrusion.
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