C70 L5-2.4L Turbo VIN 63 B5244T7 (2003)
Ignition off.
Open the cover in front of the tail light.
Undo the wing nut and take out the lamp holder.
Change the defective bulb.
Fit in reverse order.
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Check that all bulbs/lamps are intact and in working order.
Replacement of tail light cluster