See also:

Checking tire pressure electronically
•► Make sure that the SmartKey is in position 2  in the ignition lock. •► Press the button on the steering wheel to select the Service menu. •► Press the button to sel ...

Problems with PARKTRONIC
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Under the Hood
The ML350 carries a 232-hp, 3.7-liter V-6 engine, while the ML500 comes with a 288-hp, 5.0-liter V-8. Both models use a five-speed-automatic transmission with a manual shift gate. The permanently ...