I did a transmission fluid /filter change but wasn’t sure of the fill level, so I took it to a VW dealer to have them check the level (which needs to be done when the fluid is a certain temp not at operating temp). They serviced it in a short time frame (improper temp??) and said it was a bit overfilled. Since the service I noticed a delay when changing from P to R and R to D, otherwise it drives and shifts fine. But upon a true cold start there is a loud noise from the engine bay around the transmission location and the engine revs about 1600, then drops when the sound(s) stop.
Added to this is the fact that the engine codes $7E8 and $7E9 are showing up. Once they do the car still drives fine and I can clear the codes. QUESTION IS — should I take it back to the VW Dealer and make sure they didn’t remove too much fluid?
Yes. Take it back if you are not happy with the service you received. Or take it to a different dealer and have them give it a look. Sometimes a second pair of eyes can see something the first missed. Or DO IT YOURSELF…
How to Check Transmission Fluid Level without Dipstick 2008 VW Beetle
Transaxle must not be in emergency running mode. Engine should be at idle in PARK. Transmission fluid temperature must be 86° to 113° F (30° to 45° C). Use of an ifrared thermometer gun works well for this. Open the screw plug on the bottom of the trans. Level is correct if a small amount of fluid flows from the hole. Add fluid up and through the plug A. Do not dislodge filler guard cap inside fill hole with filling tool.
Use a hand held Ifrared temperature gun to check transmission temp.
$7E8 and $7E9 Engine Codes
The $7E8 & $7E9 are not engine codes. The 7E8 that you can see on the scan tool is a submenu option and is shown as “$7E8 Engine”.
Each menu represents a different mode for different diagnostic trouble codes. In the case of the “$7E8: Engine” option, $7 represents “mode 7” of the scanner and it’s used for the data stream of the vehicle’s engine. The letters “E & 8” show that you’re requesting trouble codes from module E8.
There’s another submenu option right below “$7E8: Engine”, shown as “$7E9: A/T” and it allows you to request trouble codes from the vehicle’s transmission module.
Once you select the submenu, the scanner will take you to another page, where you’ll see trouble codes in “Pxxxx” format (for example P0174 and P0302).
Once you have obtained the Pxxxx code, then you will be able to diagnose the codes.