100% Free

No Scanner Needed

Carly logo

luiseblitz1

Mercedes M Klasse Automatic Transmission Problem

My 2004 Mercedes M Klasse with a gasoline engine is having automatic transmission issues at 283701 km The engine won't start, the check engine light is on, and the gearbox feels like it's slipping I pulled the codes and there's an error stored I suspect a defective control unit Could it be a transmission failure or a park brake issue The estimate is around 1000€

4 comment(s)

clara_bauer1

I am familiar with similar transmission issues on the Mercedes M Klasse Does the instrument cluster indicate the neutral position when the gear selector is in park If not, the issue may stem from a faulty transmission control module or a malfunctioning gear position sensor

luiseblitz1 (Author)

Good question I will check that If it's not showing neutral, are we talking a simple sensor replacement, or is it more likely the whole control unit is shot Trying to gauge how deep I'm going to be digging into my pockets

clara_bauer1

Based on my experience, if the instrument cluster does not reflect the correct gear position, the control unit itself is often the culprit, particularly with the symptoms you described While a sensor replacement is possible, the control unit is the more probable cause of your automatic transmission problem Considering the error codes and shifting issues, a workshop diagnostic evaluation is advisable

luiseblitz1 (Author)

I appreciate the insight It does sound like the control unit I'll take it to a workshop Thanks for the heads up I took your advice and went to the workshop, they confirmed the control unit was defective After replacing it, the car works as expected now The transmission issues are gone

Join the discussion now: