Glow plugs replaced on this Volvo V50 that were causing the engine light to come on. The right plug is the old one & the left one is shiny new.... | By
Relay Glow plug Volvo S40/V50 and Start/stop Volvo C30, 31296273
V70: Electrical - Glow plug control unit location & question (2008 V70) - Volvo Owners Club Forum