Hi,
I have read so many forums regarding this inherited issue of w210 (ABS BAS ESP Lights pop-up). To help precisely and easy to follow steps for any current or future victim, I shall be really grateful if some of us can make a final check-list regarding this issue, starting from:
1- Replacing the Brake Switch
2- Re-flowing or finally replacing K-40 Relay
3- Confirming correct behavior of all 3 Brake lights
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Thanks!