12/01/2026
Glow plug replacement carried out on a Mercedes A180d 1.5 dci after I previously diagnosed an engine light and glow plug warning light present on the dash.
Whilst carrying out resistance testing I had found the glow plug on cylinder 4 had a high resistance of 15-16 ohms when it should only be showing around 1.5 ohms.
Although the relay and other plugs were all ok, the customer opted to have all 4 replaced for good measure and due to my quote being fairly priced.
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