Volkswagen Touareg 2006–2007 — technical service bulletin
Bulletin TT2806102 · NHTSA communication 10238597 · issued Jun 14, 2013
Technical service bulletin
communication type
Equipment
component
2006–2007
model years
2
vehicle entries
Official summary
If Glow Plug DTCs are present, check the state of charge on BOTH of the batteries. If the auxiliary battery (in the rear) is low on charge, it can set glow plug DTCs. The auxiliary battery is the battery that powers the glow plugs up during start-up.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.