S320 Speedo

Hi all, My friend has a S320 WDB2200652AO87798 The speedometer needle has gone over to 160mph and stays there permanently. Will this be a fault in the head unit or maybe a transmitter or ? Any help will be much appreciated Thanks Chu

Reply to
mlt626
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It'll go back down when he runs out of gas.

Reply to
Brad Naylor

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