Repairing threaded connections — VW

🧭 Before you start

Fits: VW Passat CC (357, 2008–2012), VW Sharan II / SEAT Alhambra (7N, 2010–), VW Polo 6R (2009–2014), VW Golf IV / Bora (1J), VW Touran I (1T, 2003–2015), VW Passat B5 (3B), VW Phaeton (3D), VW Touareg I (7L, 2002–2010), VW Sharan I / SEAT Alhambra (7M), VW Polo 9N (2001–2009), VW Golf V / Jetta (1K, 2003–2009), VW Passat B6 (3C, 2005–2010), VW Tiguan I (5N, 2007–2016), VW Golf VI (5K, 2008–2013), VW Touareg II (7P, 2010–2018), VW Golf Cabriolet (517, 2011–2016), VW Golf VII Variant (BA), VW Polo 6C (2014–2017), VW Golf Sportsvan (AM1, 2014–2020), VW Passat B7 saloon (362, 2010–2014), VW Passat B7 Variant (365, 2010–2014), VW CC (358, 2012–2017), VW Golf VII (5G, 2012–2020), VW Passat B8 (3G, 2014–), VW Touran II (5T, 2015–)

Don't miss

• Danger of injury! Observe warning notices and safety regulations ! — Disconnect battery.
• As the thickness of the tin coating may differ according to the design, the cleaning process must be performed step by step and a visual check of the ring terminal is necessary between the steps.
• Optimum contact is ensured when the components to be secured are tightened to the specified torque after cleaning.
• Danger of injury! Observe warning notices and safety regulations ! — Teach in electric windows again, enter radio code, set clock and, if necessary, recode control units which emit code signals.

📋 Procedure

1. ⚠ Danger of injury! Observe warning notices and safety regulations ! — Disconnect battery.
2. Loosen cap nut and remove ring terminal from threaded connection.
3. Check threaded connection for corrosion, dirt etc.
4. Select suitable adapter and suitable sanding pad for threaded connection. [Note: As the thickness of the tin coating may differ according to the design, the cleaning process must be performed step by step and a visual check of the ring terminal is necessary between the steps.]
5. ⚠ Take care not to abrade excessively the tin coating and ensure that the copper does not appear. This could produce a galvanic cell which destroys metal and causes faulty repair. — Set adapter on threaded connection and grind off corrosion and dirt with circular movements.

6. Check threaded connection and regrind if necessary.
7. Tighten connection and, if necessary, locating element again to specified torque (value given in the factory table, not available here). [Note: Optimum contact is ensured when the components to be secured are tightened to the specified torque after cleaning.]
8. Apply suitable anti-corrosion treatment to threaded connection (see the separate procedure).
9. Reconnect battery.
10. ⚠ Danger of injury! Observe warning notices and safety regulations ! — Teach in electric windows again, enter radio code, set clock and, if necessary, recode control units which emit code signals.

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