2004 CL500 Tire Pressure Monitoring System
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Newbie
Joined: Nov 2013
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2004 cl500
2004 CL500 Tire Pressure Monitoring System
My tire pressure monitoring system is acting strange. I start the car and the No Malfunction is shown in the display. After driving the low tire alert comes on. I checked the tires once and they are okay. When I restart the car the display tells me to drive and reset the monitor. The next message usually is a Malfunction Message telling me to drive to the nearest service station. Sometimes I do not get that message and No Malfunctions is displayed. I have low profile tires on the car with 35 psi in the back and 32psi in the front. The car has the AMG package so I guess they are the larger tires. Could the low profile affect the sensors for the monitoring system? I was going to inflate the tires to the highest pressure suggested by the manufacturer (as soon as I find figure out what that is) and see if the problem goes away. When I bought the car it came with the Carfax and it looks like the original owner had the monitoring system replaced a few times in warranty and once out of warranty. Is this issue a design problem maybe?
Member
Joined: Dec 2009
Posts: 192
Likes: 4
From: Western New York, USA
2004 CL500
You can try resetting it with the button on the dash (if you haven't already), but most likely one (or all) of the batteries are dying. I have an '04 also and mine did exactly what you're describing til it finally just stopped working. You can't just buy the batteries- you have to replace all 4 sensors. The manufacturer's recommended tire pressure should be on the inside of your gas door. Mine states 32 psi rear & 29 psi front. These numbers are for factory or similar tires, of course.
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Joined: Oct 2009
Posts: 1,924
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cl600
some rearsearch on tpms sensors that may be helpful. i researched and researched and found multiple sensors that say they will work. prices range from $22 dorman, $46 orotek, $50 itm, $80 vdo and $98 beru. this has been educational. i went with the dorman 974-001. the website listed it for chrysler pacifica. after extensive research i found out it was also listed for many chrysler products including the 300's. after more research i found out it was 315mhz and finally i checked multiple web sites for my car and finally found 2 that listed the dorman 974-001 for 2001-2006 mercedes cl class. multiple other websites listed the dorman as well, but they either didn't show a model #, or used their own part# which of course didn't match dorman's. this has been exhausting and i hope i'm right about the dorman 974-001. for $22 it's worth a shot. any feedback is appreciated. i hope i'm right and that this thread can save some people money.
