Tech Tips December 2016 (12-2016)

Publication date: 2016-12-01
Reference number: 12-2016

TECH TIPS DECEMBER 2016

TECHNICAL SERVICE BULLETIN

Reference Number(s): 12-2016, Date of Issue: December, 2016

SUBARU:

All Models

03 UNNECESSARY CVT REPLACEMENTS

During ANY engine or transmission removal, it is required you follow the Service Manual removal procedures. Recently, it has been brought to SOA's attention several CVT replacements have been needed after engine installation. Further investigation led to the conclusion that the CVT hydraulic oil pump was damaged due to the torque converter being dislodged from the pump drive gear. When installing the engine assembly, the torque converter was not properly reseated into the pump drive gear causing a binding condition, which ultimately led to pump failure. CVT hydraulic oil pumps are not a serviceable component, so CVT replacement is necessary to resolve the concern. When removing the transmission from the vehicle for any reason, the Service Manual states as follows in Figure 1 :

As seen above, the Service Manual shows the STOPPER SET (498277200) is required to be installed after removing the torque converter bolts and confirm the torque converter spins freely. Failure to install this tool could result in damage to the CVT unit as seen in Figure 2 . Damage in this manner is not a matter for warranty.

If questioning whether or not the torque converter is fully seated into the CVT unit, the Service Manual provides an inspection procedure to confirm depth. Figure 3 is directly from the 2017 Impreza Service Manual showing the procedure.

15 2017MY IMPREZA, DISPLAY AUDIO (NON-NAVIGATION), CLOCK NOT SYNCHRONIZED

NOTE: This information is applicable to iPhone (IOS) users only. If a customer states the time displayed on their iPhone is not synchronized with the instrument panel clock display, the information below is an easy solution.

First, select the setting mode for the clock by following these steps:

Press the "Home" button on the audio unit display.
Press "Settings"
Press "Vehicle"
Select "Clock Adjustment"
Select "Auto"

Once "Clock Adjustment" is set to "Auto", the iPhone "Show Notifications" setting must also be confirmed as set to ON following the steps below.

From the iPhone Home screen, tap "Settings".
From the Settings menu, tap "Bluetooth" and make sure it is set to "On".
Select the device being used then tap on the blue icon to display the device options list.
The "Show Notifications" must be set to ON for the time displays to synchronize.
Once "Show Notifications" is switched on, the device and vehicle clocks will synchronize automatically.

15 2017 IMPREZA, NO BACKUP CAMERA AFTER RADIO REMOVAL?

If you encounter an issue where the radio needs to be removed on a 2017 Impreza, it is important the Service Manual procedure be followed. The Service Manual advises to disconnect the battery before servicing the audio unit. If you fail to follow the instructions, you could have a customer concern of the backup camera is inoperative since the service. The reason for this is, when you connect power to the unit, a self-check is performed. If the backup camera has not been connected yet, the unit assumes there is no back up camera and renders it inoperative. If you run into this, a quick fix is to install the transit (PDI) fuse or remove and reinstall the negative battery terminal. The situation can be avoided completely by following the Service Manual and disconnecting the battery before the service.

CAUTION: If swapping an audio system for diagnostic purposes, be sure the DCM remains with the original vehicle or network communications will be severed.

CAUTION: The SXM ESN is assigned by VIN. Moving audio units between vehicles will disrupt SXM services. Below is an image of what you will likely see if a line check is performed before the issue is corrected:

Below are the Service Manual instructions:

15 CLOCK SETTINGS

With the release of the 2017 Impreza SUBARU STARLINK™ 6.5" Multimedia System and SUBARU STARLINK™ 8.0" Multimedia Navigation systems, there have been inquiries about the clock adjustment. There are two different modes of adjustment available: Automatic and Manual. Below in Figure 1 is an excerpt from the 2017 Impreza Owner's Manual describing both modes.

Automatic setting of the clock is accomplished differently between the navigation and non-navigation systems. As shown above, the navigation system will automatically set the time according to GPS location. Non-navigation systems utilize a paired smartphone connected via Bluetooth to accomplish the automatic setting. During the PDI process, it is recommended to manually set the clock on non-navigation models. This will ensure the correct time is displayed and allows the opportunity to show the customer the automatic feature should they choose to use it. Please review the Owner's Manual for the applicable manual clock setting procedure.