Mercedes CLS63 Fuel Pump Relay Parts
Showing 6 out of 6 part(s) found in our catalog.
Brand
Keyword
Subcategory
Mon-Fri 8-4 MST/PST (Arizona Time)
Based on industry averages you can expect to pay between $3.49 and $15.19 for a Mercedes CLS63 fuel pump relay.
Where Is The Mercedes CLS63 Fuel Pump Relay Located?
The Mercedes CLS63 fuel pump relay is tucked away, and most owners don’t spot it right off. Mercedes put it in the trunk, hidden under the spare tire well in many models. Sometimes, it’s behind a panel on the passenger side. To get to the relay, you’ll have to lift the trunk lining or slide off a trim panel. If you’re looking for the exact spot, your manual is the best map—Mercedes didn’t stick to one place every year. Knowing where it sits lets you get straight to the point when the car refuses to start or loses fuel pressure. It’s good info to have, not just for emergencies, but for quick checks and fuse swaps, too.
What Are Common Symptoms Of A Bad Mercedes CLS63 Fuel Pump Relay?
When the Mercedes CLS63 fuel pump relay fails, the car doesn’t hide it well. The engine might turn over but refuse to catch. Sometimes there’s silence from the back, when you’d expect the pump to hum. You might get the engine started, only for it to stall after a few seconds. Stalling can also hit while driving, usually out of nowhere. Random power cuts or surprise shut-offs can trace back to the relay, not always the fuel pump itself. Before spending time or money on bigger fuel system repairs, check this relay—it’s easier, and often a cheap fix.
How Do You Test The Mercedes CLS63 Fuel Pump Relay?
To test a Mercedes CLS63 fuel pump relay, you’ll need a multimeter, maybe some jumper wire. Remove the relay first. On a bench, send 12 volts across the coil pins. A working relay gives a sharp click, and the circuit between load terminals should close up—check with the multimeter. No click, no continuity, or weird readings mean the relay’s shot. If you aren’t sure, swap in a matching relay from another spot—if the car starts, you’ve found your problem. It’s a fast way to rule the relay in or out before chasing more complex faults.
Can I Drive With A Faulty Mercedes CLS63 Fuel Pump Relay?
With a bad Mercedes CLS63 fuel pump relay, driving turns risky or impossible. Often, the engine won’t even run. If you do manage to start, sudden stalls are likely, cutting power when you least expect. When reliability matters, don’t gamble. The relay can die at any time—on busy roads or in the wrong place. Most won’t risk driving with a known bad relay since a stall could leave you stranded or cause a bigger problem. Change it as soon as you spot trouble, and avoid getting stuck or worse.
How Do You Replace A Mercedes CLS63 Fuel Pump Relay?
Swapping a Mercedes CLS63 fuel pump relay is one of those jobs you can tackle yourself. First, pull the negative battery cable. Find the relay, pop it out gently, and press in the new one. Double-check the pins line up so nothing bends. Once it’s in, hook the battery up and start the engine. Listen for the pump and make sure things are running smooth. While you’re there, take a moment to eyeball other fuses or relays. Small steps like this now can head off headaches later.
Looking For A Mercedes CLS63 Fuel Pump Relay?
AutohausAZ makes it easy to track down your Mercedes CLS63 fuel pump relay. Their prices often come in lower than local shops, and they ship orders out fast. If something’s not right, returns go quick and smooth. Getting the right relay doesn't have to be a hassle—this shop keeps it simple, friendly, and affordable.
