In this article we will try to help you fix a issue that can be frustrating, and if not taken on time become a financial drain. In truth, spotting a leak on your vehicle is rarely reassuring, and it is even less calming when it’s a gearbox leak on your BMW 7 Series . In this article, we’re going to help you confirm that it’s in fact a gearbox leak, then, how to repair a gearbox or transmission leak, then, give you some prevention tips, and, at last, give you an idea of the price of the gearbox of a BMW 7 Series.

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Gearbox leak on BMW 7 Series, source and manifestation

If you have identified an oil stain on the ground, you will need to validate that this leak is in fact originating from the gearbox of your BMW 7 Series. To achieve this, you will need to go under your vehicle and follow the oil leak. If it is transmission oil, it must be originating from your gearbox sump or an adjacent room. Once affirmed, here are the possible roots of this transmission leak:

  • A gearbox cap: If it’s wrongly screwed on…
  • Defective torque converter: Just equipped on automatic gearboxes.
  • From the transmission oil sump: In the event that it is cracked or broken
  • One of your seals broken

How to repair a gearbox leak on BMW 7 Series?

After discovering the different roots of a gearbox or transmission oil leak on your BMW 7 Series, we will try to describe to you what are your possibilities to repair this oil leak. Take note that whatever the case, after having founded a leak, you must go to a garage to distinguish the exact source of the leak, in any other case your gearbox might be irreparably broken. Nevertheless, here is how the service of the garage and the solutions that will be offered to you:

  • Very often to distinguish the leak, the auto technician will have to take apart your gearbox, which will require a high labour cost.
  • If you’re lucky and it’s just a gasket, your auto technician will change it and reassemble the gearbox of your BMW 7 Series, in any other case you’ll have to replace the whole gearbox
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  • At last, for the do-it-yourselfers, it is possible to use a sealing kit which is just powerful in the case of small leaks, this kit is worth around 40 euros

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Prevention: How to avoid gearbox leaks on your BMW 7 Series?

There aren’t many alternatives to avoid gearbox leaks on your BMW 7 Series , nevertheless here are the three most effective:

  • Regular oil changes on your gearbox deck.
  • Drain your gearbox and put new oil in it. If you want to know everything about this task, please browse our content page on this subject matter.
  • Use a particular additive for maintenance of gearbox seals, these additives will restore flexibility and enable to plug slight leaks, you will discover some for a few dozen euros at Oscaro.

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Price of a BMW 7 Series gearbox

At last, we would like to give you an idea of how much it costs to replace the gearbox of a BMW 7 Series. As you have understood, gearbox problems often lead to a whole replace of this part. It is difficult to give you a precise price because depending on the garage the labour can vary a lot and depending on your engine the component will as well have a different price, nevertheless, we estimate that the repair, labour included will cost you between 800 and 2000 euros , knowing that the component alone costs between 400 and 1000 euros.

If perhaps you have any further questions about the BMW 7 Series, do not hesitate to consult our BMW 7 Series category.