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GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

Secondary air pump relay location

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Old Feb 21, 2020 | 01:21 PM
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2014 GL450
Secondary air pump relay location
My 2012 GL450's secondary air pump is broken again. Last time it was repaired by a garage but this time I want to DIY. I have got most things figured out I think but I need to find where the relay is. I have attached a picture of the fuse box in the front engine bay. Is #4 the relay for secondary air pump?

Thank you very much!

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Old Feb 22, 2020 | 10:12 AM
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2017 GLE350 4MATIC
Yes, #4 is the one.

Per function diagram PE07.61-P-2101MAC you are looking for component F58kE, air pump relay.

Per WIS GF54.15-P-1257-02GZ
The fuse box is F58, fuse and relay box in right engine compartment.

Your relay 4 is M-B relay E, secondary air injection pump
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Old Feb 24, 2020 | 02:36 PM
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2014 GL450
Thank you very much!

Originally Posted by chassis
Yes, #4 is the one.

Per function diagram PE07.61-P-2101MAC you are looking for component F58kE, air pump relay.

Per WIS GF54.15-P-1257-02GZ
The fuse box is F58, fuse and relay box in right engine compartment.

Your relay 4 is M-B relay E, secondary air injection pump
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