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Home >> Audi >> 2009 >> Q7 4.2 >> Repair and Diagnosis >> Engine Mechanical >> Electrical System - (Battery, Starter & Generator) >> 27 Battery, Starter And Generator >> Battery >> Battery, Disconnecting And Connecting

Battery, Disconnecting And Connecting

Special tools and workshop equipment required 

CAUTION:

TDI (SCR) vehicles: 

  • After the ignition is switched off, the reducing agent goes from the metering line to the Reducing Agent Injector -N474- and back into the reducing agent active chamber.
  • Wait until all the reducing agent has been returned before working in this area. This could take up to 10 minutes after switching off the ignition.
  • Only after this is complete can the battery be disconnected. Again, this could take up to 10 minutes after switching off the ignition.

Disconnecting 

-- Position driver's seat as far back as possible. use the entire seat adjustment range to do this.

-- Turn off the ignition and remove the key.

-- Reach under seat and release retaining clips on back side of cover -1- in direction of -arrow A-.

Fig 1: Identifying Cover -1-
GWWA27-10077Courtesy of AUDI OF AMERICA, LLC

-- Then remove cover in direction of -arrow B- from driver's seat console.

-- Pry cover -1- with Pry Lever 80-200 from floor covering.

Fig 2: Pry Cover -1- From Floor Covering
GWWA27-10072Courtesy of AUDI OF AMERICA, LLC

-- Raise floor covering -2- slightly in ground wire area.

-- Remove nut -3- and remove ground wire -4- from ground point.

Connecting 

NOTE:

The connector must be connected when connecting the ground wire to the ground point on vehicles with Battery Monitoring Control Module -J367-.

If the connector on the Battery Monitoring Control Module -J367- comes loosen when connecting the battery, wait 30 seconds before connecting it again.

-- To connect, position ground wire terminal clamp on ground point and tighten nut.

When connecting the battery, perform the following steps:

NOTE:

After connecting the power supply, the ABS warning lamp may only go out after the vehicle has been driven a few yards.

Tightening Specifications 

Component Nm
Ground wire to ground point 20