1989 Mercedes-Benz 420SEL Transmission Service & Repairs

Get Started

Brake for Mercedes-Benz 420SEL Transmission Service

Automatic or manual transmission, Firestone Complete Auto Care can help. Schedule a transmission service or repair today.

Schedule an Appointment

Why is Your 1989 420SEL’s Transmission So Important?

The transmission delivers power from the motor to your wheels so that you can drive at your desired speed. Since the transmission has to translate the precise amount of power for your desired amount of speed, a small transmission issue can put a big dent in your 420SEL’s performance. Such problems aren’t hard to spot. Mercedes-Benz 420SEL transmission problems can present themselves as shifting delays, jumping or grinding during acceleration, the car shaking on the road, or whistling noises and a burning smell coming from under the hood. If you ignore Mercedes-Benz 420SEL transmission issues you could see your fuel economy decrease or discover that your 420SEL’s not even driveable.

Mercedes-Benz Transmission Recommendations for 1989 420SELs

According to Mercedes-Benz, your 420SEL’s transmission should be checked regularly for wear and tear. First off, the transmission fluid in your 420SEL should be exchanged regularly with Mercedes-Benz-approved fluid. Our technicians are trained to service 1989  Mercedes-Benz 420SEL transmission systems according to vehicle manufacturer recommendations. Schedule an appointment at your local Firestone Complete Auto Care at the first sign of transmission problems to help diagnose, treat, and prevent major transmission issues.

Mercedes-Benz 420SEL Transmission Service Pricing

We work to keep the average cost for Mercedes-Benz 420SEL transmission fluid changes and repairs affordable. Stop by your nearest Firestone Complete Auto Care and we'll start your visit with a free Courtesy Check. We’ll check out your 420SEL’s major systems and components to help inform your car service decisions. Whether your car needs a transmission fluid exchange or preventative maintenance, you can count on our Triple Promise: Fixed Right. Priced Right. Right on Time.

1989 Mercedes-Benz 420SEL Transmission Q&A

  • What happens when you "ride" your Mercedes-Benz's brakes? Riding the brakes or keeping your foot on the brake pedal (even lightly) can lead to transmission issues. Remember that when you’re driving down winding roads, and opt for engine braking when possible.
  • How much can my Mercedes-Benz tow?   Think twice before volunteering to tow a moving trailer, no matter how small. The added weight can cause issues with your transmission if your vehicle isn't equipped to handle the load. Check your owner's manual to ensure you have the proper towing setup and aren't going over your towing capacity.
  • When should I have my 420SEL's transmission fluid checked or exchanged? Maintaining your Mercedes-Benz 420SEL transmission fluid is one of the best ways to maintain your transmission's health. A general rule of thumb is to have your transmission fluid checked and changed about every 30,000 to 60,000 miles, but that timeline can change if you're hard on your Mercedes-Benz. The good news is that transmission fluid leaks are affordable to repair and easy to spot.
  • Can transmission fluid leak from my Mercedes-Benz 420SEL? Over time, transmission fluid can leak from your Mercedes-Benz 420SEL, potentially causing transmission problems. A transmission fluid leak may be caused by a damaged transmission pan, faulty transmission cooler lines, worn-out seals, a cracked transmission housing, or an overfilled transmission.
  • Who can fix my  Mercedes-Benz 420SEL transmission leak? When your 420SEL transmission is acting up, Firestone Complete Auto Care is here to help. Book an appointment today for transmission system diagnostics and repairs.
  • Can I still drive my Mercedes-Benz 420SEL if it has a transmission fluid leak? Driving your 420SEL with a transmission fluid leak is highly discouraged. Transmission fluid is vital to the smooth operation of your transmission system, and a leak can put the entire system at risk. A transmission fluid leak may lead to decreased performance, overheating, and possibly even transmission failure.